Tag: Ebola

  • Ebola scare: FG dispatches medical team to Calabar

    Ebola scare: FG dispatches medical team to Calabar

    The Federal Government has dispatched a team of medical team to Calabar, Cross River state ascertain the suspected Ebola scare.

    The accident and emergency ward of the University of Calabar Teaching Hospital has been shut down following an Ebola Virus scare.

    The scare was as a result of the death of a patient, who died at about 2pm, after symptoms related to the deadly Ebola virus manifested before he finally passed away.

    Reports say the patient, whose identity could not be ascertained, was brought in from Akpabuyo Local Government Area of Cross River State on Tuesday with high body temperature while at the same time was vomiting, stooling and bleeding from nose.

    The patient died shortly after samples were taken from him for investigation.

    However, the   Federal Ministry of Health has ruled out the case of Ebola, saying that it suspected that the patient could have died of Haemorrhagic fever.

    Prof. Abdulsalam Nasidi, Director National Centre for Disease Control (NCDC) told our reporters that a team has been dispatched to Calabar to verify the case.

    He also said that the government is awaiting the result of the laboratory investigation.

    Nasidi also assured Nigerians that there was nothing to fear about as appropriate measures have been taken to protect the people and even those who might have had contact with the patient.

    He further said that the Federal Government team is already on ground to assist the state.

    The Hospital accident and emergency ward has already been quarantined in order to curtail any spread in the eventuality that it was a case of Ebola.

    Chairman of Medical Advisory Committee, who also doubles as the Deputy Chief Medical Director of UCTH, Queenet Kalu, according to report has said that the patient was suspected to have died of Haemorrhagic fever.

    She said, “Yes, we had a patient that was suspected to have died of Haemorrhagic fever but it does not call for panic as everything is under control. There is no need for the public to be scared of EVD as it is not confirmed.”

    The patient it gathered was brought in on Tuesday vomiting, stooling and bleeding from the nose and mouth. He however died around 2pm and his body has been quarantined while the ward was shut down.

    Nigeria had its first dose of Ebola disease on 20th July 2014 when one Patrick Sawyer, a Liberian stole into the country after been affected with the deadly disease. But the country’s medical team rose up to the occasion to curtain it’s  spread, with minimal casualty as the country recorded seven death.

  • Cross River dismisses Ebola rumour at UCTH

    The Cross River Government says it is awaiting results of blood samples of a patient, who died at the University of Calabar Teaching Hospital (UCTH) with symptoms of viral hemorrhagic fever.

    Dr. Sunday Omini, Director of Public Health in the state Ministry of Health, said this on Thursday in an interview with the News Agency of Nigeria (NAN) in Calabar.

    Omini was reacting to media reports that a suspected Ebola patient died in UCTH on Wednesday.

    “We are aware of the situation and we have got preliminary reports from the hospital, and we are all awaiting the result of the blood samples.

    “But judging from the information I have received so far, I am 90 per cent sure that it is not Ebola.

    “`However, we are on top of the situation, there is no cause for alarm,’’ he said.

    Meanwhile, the management of UCTH said it had informed all relevant agencies about the development, including the National Centre for Disease Control, Federal Ministry of Health and Cross River government.

    This is contained in a statement issued by Dr Queenet Kalu, Chairman, Medical Advisory Committee (CMAG), on behalf of the Medical Director of the hospital.

    The statement t said the public would be informed adequately as soon as results of the blood samples were released, adding that the hospital management had quarantined identified contacts.

    “Further information will be made available as soon as we receive the results of the samples sent for analysis,’’ it said.

  • No new Ebola cases – WHO

    No new Ebola cases – WHO

    The World Health Organisation (WHO) on Thursday said no new Ebola infections were reported in West Africa in the past week, bringing Sierra Leone closer to its goal of becoming Ebola-free in early November.

    It was the first week without any new cases since the epidemic started in March 2014.

    “Sierra Leone has seen no new cases in three weeks.

    “The government would declare the end of the epidemic on Nov. 8 if the situation continued,’’ WHO press officer, Margaret Harris, told newsmen.

    While Guinea also recorded a week free of infections, 500 people who had been in contact with Ebola patients are still being monitored.

    In addition, health workers have been unable to locate several people who pose a high risk because they had been in close contact with sick people.

    “These things make us very wary,’’ Harris said.

    Liberia was the third country affected by the outbreak, as it was declared Ebola-free in early September.

    Report says since the first infections in West Africa in late 2013, over 28,400 people have fallen ill and nearly 11,300 have died from the viral hemorrhagic fever in the region.

  • Night Lagos govt officials were forced out of sleep over Ebola suspect

    Night Lagos govt officials were forced out of sleep over Ebola suspect

    How do you do your work of monitoring the various entrance and exit points into the country?

    My staff  send reports to me every minute. This is 3.16 pm the next flight will depart from Umaru Yar’Adua Airport. The report is from Katsina. Every one hour, I can tell you what is happening across the country. I get reports with the pictures.

    How are you able to do this?

    You see, I told all my staff that they have to be IT compliant. For example, when my staff told me that Abuja is going to start airlifting pilgrims, I told them that this year; no pilgrim shall leave Nigeria sick. So, before they open the camp, my staff will go and inspect the camp, certify it to make sure that it is swept, cleaned and from there, they will show me the picture of the toilet, I will see it here.( Holding up his phone) I will tell them that “your toilet is not clean. Go and make sure that the toilet is cleaned, open the taps, let me see the water rushing”. They will open it, I will see it. I will ask them to show me the water tank. ‘Show me the food that they are eating’ because we certify food also. Port Health staff educate the food handlers- check their finger nails, check the water those going on Hajj drink, the environment they sleep in, the toilets they sleep in, where there are mosquitoes, snakes, scorpions, we fumigate and kill them. The camp has been closed for one year, so, by the time we go and check  and fumigate it, the rats, scorpions will die and by the time we go and wash the place, we will see all of them and it is then that the pilgrims can enter. As they are going on hajj, we take their blood pressure, check them for diabetes and as they arrive at their destination, their diabetes and hypertension will be treated. If they are pregnant, we ground them because they cannot travel to Hajj with pregnancy. We have tests for pregnancy. They give lectures through which they train pilgrims on what sicknesses to expect, what to avoid,  take their blood pressure and advise them. Our pilgrims have never been better educated than what we did this year because we are afraid that there is a new epidemic in the Middle East and if it comes into Nigeria, we would be in trouble- that’s the Middle East Respiratory Virus, MERS. So, all our staff have it on their finger tips, including even a youth corps member. If he comes here, he must learn how to train travelers. If you wake them up from their sleep, they must know how to train travelers. We check the planes before they enter, check the cleanliness. We check the contraband items seized from travelers too. Port Health Service staff are struggling to send me reports all over every minute. They will show me the water facilities, what type of emergency toilet arrangements are there when the figure is high, I have more than 2000 pictures from around the country here (inside the phone) because they come in from around the country every hour. When aircrafts come, they have to go and fumigate it to make sure there is no mosquito inside the aircraft. We also check ships, land border, airport, border, sea ships when they arrive we check how they cook food inside. My staff take speed boats, go to the high seas to check the ships. As you sit here, I have received reports from airports, ground crossings and I couldn’t have arranged it. Let me see if I can see any report from ground crossing (checks the phone).  Yes, this is from Kaduna State, from Maiko border( ask journalist to read report) “Vehicles no, 12, passengers, 222, temperature above 37 degree, 0, good morning sir.” If there is anybody with temperature above 37, I will be informed immediately and we have a signal code- red code, yellow code, green code- you can see that we have the green code in most of these places, but by the time we have a temperature alert of over 37 degree, we switch to red alert, all of us are on alert, and they know I will not sleep until the alert is over. The Perm Sec himself does not sleep, even if it is 2 am, I wake him up that ‘Sir, there is a problem, we have so, so case.” Like last week, we had a case of somebody who came from Sierra Leone with high temperature, my coordinator in Lagos spent the night with her. She was a director, but she was reporting by the minute to me and I in turn was waking the Permanent Secretary. I said there is a problem and I am going to be waking you up to give you update. He said go ahead. When the day broke, I sent him a text to inform him that the  result was out and informed  him  the person had no Ebola and had been discharged.

    When did you begin to have these comprehensive operations?

    This year, the Ebola issue has woken us all up.  Things that we were a bit relaxed about before, we are now doing better. And one thing that this Permanent Secretary did which I always applaud is that in the midst of fighting Ebola, all of us were on what we called ’emergency mode’ but he was insisting that we must leave residual institution benefits after the emergency, and that is what has helped Port Health Service. Most of the investments made were not just transient investments, they are investments that we could fall back upon even when the epidemic is gone. And the staff morale is phenomenal. Whenever we have a threat, we have an emergency team made of well trained epidemiologists- there are three categories of them- many of them are doctors, veterinary doctors and the third group are laboratory staff who have excelled, and working in the field.  They have come back for their Masters degree. They are the foot soldiers that handle this data for us, they are very good at statistics. Some of them are doing their residency programmes while some are already consultants in other fields. If there is an emergency that will last 24 hours, I will activate another emergency mode. I will give you the example of the emergency group that I did when some Nigerians went to Liberia and came back, so we had to monitor them-before they left and after their return, for 21 days.  We created what we called an EVD response group and everybody that is concerned is added to the group. So, if I send a message, everybody concerned will react immediately and send their report and everybody is carried along until the matter is closed. We have successfully concluded the monitoring of the people from Liberia.  They are all healthy and this emergency group is closed, so everybody is disbanded. As soon as another threat arises, if it is solvable within 24 hours, we deal directly with the field office, if it is not, we reactivate an emergency team for it.

    What is your staff strength?

    Our staff strength is 607, but to cover our 180 posts, we need 1, 725 staff immediately.  That is the ideal, it is well calculated and nothing is left to chance here. We know the locations, we have done the distributions and we know where the staff need is high and we know how many shifts they run. And we know what an ideal shift should be like. So, we calculate that and know that we are short staffed by 1, 122 workers. It will even be better for us to have 2000, because of redundancies, you want to move people around or allow them to go on vacations.

    Are you making efforts to employ more people then?

    We have a presidential waiver to employ and the process is going on. What the former President approved then was 660- 330 for another department and 330 for us. But that is not enough.

    What are the categories of staff you want to employ?

    We employ several cadre- doctors in small number, nurses in larger number, but the bulk of staff that we need are environmental officers because they are the foot soldiers on the frontlines and they are the people officially certified by WHO to do certain functions- like certifying an aircraft, a ship. The environmental health officers can go into the ship, certify the ship, the crew, the environment, their food, everything and issue a valid document that can be used anywhere in the world. And that is why the most important staff we have in Port Health are the environmental health officers. Every other person follows. We are not presently in about 200 posts.

    But are all our borders covered?

    Now, when I hear people talking about the porosity of our borders, I understand their anxiety and I tell you, when you work in an environment, you get more intelligent and wiser by the day. And I will give you an example- when you come in through Kwara State which is one of our most important and difficult borders, people can come in through different routes, but ultimately, all the routes lead to a main road.  They must merge from the different tributaries and pass through that main road. But when you look at all the tributaries, you will think our borders are porous, but they are not. We have mobile teams that attend to them. Then, we have field teams that also block these major tributaries; we also have another large team that monitors the smaller routes. So, if they escape from one, they cannot escape from the other, and ultimately, we will pick them. That is what is happening in Chikanda. But the public will say Nigerian borders are porous, but we know what we are doing. That’s why we called them expansive borders.

    You said all these began this year?

    No, we have been doing it. But because the staff have been in the field, they’ve lost their sense of touch with headquarters because government is not providing them with what to work with, so many of them were relaxed. And that is one thing that has changed in the past one year- there is now improvement in logistics, up till late last year; the entire Nigeria Port Health Service had only three vehicles- one in Abuja which is not serviceable, one in Lagos  which is about seven years old. What we did during this Ebola thing fetched us 18 vehicles. Though, it is still a far cry from what we need, it is totally different from what we had before.

    How many of those cameras do you have?

    We have 12- two are in Abuja, two in Port Harcourt, two in Kano and six in Lagos. But Lagos requires minimum of 12, because I can put 24 in Lagos. But we have statistics to show that those six have made a difference in Lagos. We have reduced the volume of our volunteers  gradually from about 500 to about 300 and by the end of last month, to zero because of the cameras. You can calculate the payments the volunteers would have received, you can imagine the speed of passenger flow when they are being manually checked and the speed when they are going through a camera which they don’t even see- we only sit behind the camera and monitor and if we want, we can rewind it to see who has high temperature and if a staff is not doing well, we can detect it because we can see if a person with a very high temperature has passed through the system. But they are very vigilant because the records are kept. So, the cameras have helped to reduce cost, personnel. They have  brought orderliness, and  help to keep records which we can retrieve anytime making our accuracy to be improved. We are very careful with three words in Port Health- healthier, safer and easier. We combined the three words in our work. Whatever will be healthier, safer and safer for the travelers we take it. So, the Dangote cameras have really made the job easier for us, safer for us, safer for the traveler, healthier for the traveler and healthier for the country.

    How much does the camera cost?

    I don’t have an idea, but I know that even installing it, training, printing of the manuals, training on servicing, cost him a lot of money because he brought experts from Dubai to go round and train 20 people per camera. So, he trained 240 people and in our bid to create redundancies, we now make sure that virtually every staff that is in any airport has had an opportunity to train with the cameras. So, every staff of the Nigeria Port Health Service in the airport can handle those cameras.

    How do you monitor these things?

    It is very easy- the first thing you do is to automate your system to make sure that there is delegation. I can also let you know that we are monitoring every corpse that comes into the country. People don’t just wake up and bring corpses. No airline can bring a corpse here until we certify it and there are corpses we have denied, including those of VIPs.  There was a VIP that died somewhere and we said I cannot sign that death certificate, the Perm Sec kept receiving calls and I went to him and said, ‘sir, this is what is happening,’ he said ‘Dr. Gwarzo, go and do what is right’. That man was not buried in the country. He was buried where he died because bringing him in would have opened us up to further challenges. He didn’t have Ebola, he didn’t have a health problem, but bringing that corpse back would have broken our fundamental policy and I told the Perm Sec that ‘if we do this, we are going to derail our policy that has saved us. You can give an administrative approval, but it is not good’. He said we don’t need to do that. Let’s do the right thing. He has empowered us, so we did the right thing. And I can tell you, any corpse that gets our certificates is genuine based on scientific evidence because there are documents we look for before we give it. Also, to reduce our workload, I have automated that system. I sat down with the staff and drafted a policy- who handles this level of approval? If it is this, this, don’t look for me, go and type the certificate, I will sign it. My staff who is a level 7 officer can call you and say, if you apply, this thing is going to be denied because he has not seen one, two, three documents and when they call me, I will say he is right, listen to him. And we have support from various agencies- ICPC has done us tremendous help. My own signature and that of my key staff are all over the world and instead of doing the right thing, some people will go and fake it. Somebody came in here with a fake certificate, he wanted me to endorse further. I called ICPC, they came here and picked him up. He is in jail now because if we don’t do that, we are going to open up this country to danger. Every death certificate that we signed is genuine, it is not hazardous to Nigeria. We handled about 35 different certificates on different issues- food handling, fitness to travel etc.

    How are you handling all these, especially in the past three months when there is no budget?

    Some of the activities we do are funded by government directly, for example, yellow card. Government produced the first batch, but now, the programme is funding itself because we charge money for the yellow card which goes back to the central account. Then, as we issue certificates, we also issue receipts from government treasury and the money paid go directly into the Ministry of Finance, but we keep the records and now go and tally at the end of the quarter or at the end of the year as the IGR collected by the ministry. But one unfortunate thing is that none of our airports, seaports or land crossings has been gazzeted as internationally accepted POE- Point of Entry or Point of Exit because there is an accreditation that takes place and you are now certified as designation. Then you can issue certificates that are even more recognized and can charge money. So, we are losing that money because we are not certified.

    What does it take to get that certification?

    A lot- some structural changes in the airports- how people come in, where they sit, where they are screened and the services you provide and also, the way you work with the other agencies, ICAO and all the agencies even the one dealing with shipping lines. So, when you have everything in place, you invite the WHO to come and certify you, but we are not qualified and we are losing a lot of revenue.

    Is there any move to do that?

    Yes! We have gone through almost stage two now because it is lengthy process. We have started and that is what is contained in the document of our reform process.

    What are the major challenges that you are facing?

    First of all, most of our policies are old. The Port Health Service was established in 1925, but the latest review of our laws was in 1968, then Nigeria is behind schedule in implementing the WHO/AITA 2005 regulations and that is why we cannot charge money. Nigeria is yet to designate point of entry in line with IATA. We’ve been given seven years now to do it. It involves a lot of changes- you have to work with FAAN, the Nigeria Port Authority, shipping lines to change certain structural issues.

  • Hundreds quarantined for Ebola in Sierra Leone

    Hundreds quarantined for Ebola in Sierra Leone

    Health authorities quarantined hundreds of people in northern Sierra Leone on Monday after a 16-year-old girl died of Ebola in an apparent case of sexual transmission, the first confirmed death from the virus in the district for nearly six months.

    Sierra Leone celebrated last month when it discharged the last remaining Ebola patient from its treatment centres.

    But since then new cases have erupted, leaving two dead and five people in treatment, Reuters reported.

    The worst outbreak of Ebola on record has killed more than 11,000 people in Sierra Leone, Guinea and neighbouring Liberia since it began in December 2013.

    Liberia was declared Ebola-free this month but growing evidence that the virus may survive longer than previously thought in sperm has raised fears of fresh outbreaks.

    The teenage girl, Kadiatu Thullah, died on Sunday at the International Medical Corps Ebola treatment unit, authorities said.

    Emmanuel Conteh, head of the Ebola Response Centre for the district of Bombali in northern Sierra Leone, said that some 690 people in the village of Robuya where Kadiatu lived would be isolated for three weeks.

    “Seven of her primary contacts have been taken to the Ebola treatment unit,” he told Reuters. Three patients who came into contact with the girl at another health facility have also been taken to the treatment unit.

    Conteh said health workers were investigating how the teenager got infected, since she had not travelled outside the village in years. Initial suspicions are that she had sex with an Ebola survivor.

    “We are baffled by that possibility because the survivor in question was discharged in March, way beyond the 90-day period within which sexual transmission is said to be possible,” Conteh said.

    The head of Sierra Leone’s Ebola response, Pallo Conteh, has warned of a possible new surge of the virus after a woman died in the nearby Kambia district, on the border with Guinea.

    Nearly 1,000 people are into their second week of quarantine there, but a “high risk” contact remains on the loose, Conteh said.

  • Ebola: IMF to support Liberia’s recovery drive

    International Monetary Fund (IMF) Managing Director, Christine Lagarde, said on Thursday the Fund was committed to supporting Liberia’s economy as it recovers from the Ebola epidemic.

    Speaking after talks with President Ellen Johnson Sirleaf, Lagarde praised Liberia for its hard work in battling the deadly virus.

    It became the first of the three West African countries ravaged by the worst Ebola outbreak on record to declare itself free of the disease, Reuters reported.

    Over 11,000 people have died in West Africa since the epidemic erupted more than 18 months ago.

    Liberia has been hardest hit, with over 4,800 deaths.

    The IMF provided around $130 million in new financing and debt relief for Liberia during the crisis, Lagarde noted.

    “Stay the course in the direction of improving the economy of Liberia,” she told a news conference. “You have the road map, you have a plan and we want to cooperate.”

    “That makes your massive effort of conducting democracy and growth in a post-conflict, post-epidemiological environment even much difficult,” Lagarde said.

    Liberia was declared free of the Ebola virus for a second time on September 3, entering a 90-day period of heightened surveillance.

    The country was declared Ebola-free in May but more cases appeared in late June, probably via transmission from sexual contact as the virus can survive in semen well beyond the usual 21-day incubation period.

     

  • Sierra Leone village quarantined over Ebola

    Sierra Leone village quarantined over Ebola

    Nearly 1,000 people in Sierra Leone have been put under quarantine following the death of a 67-year-old woman who tested positive for Ebola.

    It comes five days into a six-week countdown for the country to be officially declared Ebola-free.

    The quarantine will last for three weeks, provided no new cases are recorded, the BBC reports.

    More than 11,000 people have died since the start of the Ebola outbreak in Sierra Leone, Guinea and Liberia.

    The BBC says the authorities had been optimistic after a long period without any new Ebola cases and this caught them off-guard.

    The quarantine, according to report, is stricter than previous ones.

    It includes a curfew in which people will not be allowed to move from one house to another.

    Soldiers and police have been deployed to keep the quarantine in Sellakaffta, a village in Kambia on the northern border with Guinea.

    The World Health Organization and Sierra Leone’s health ministry are planning a vaccination programme for those who could have come into contact with the woman.

    Guinea is still trying to contain its outbreak, while the WHO announced that the Ebola virus had stopped spreading in Liberia for a second time on Thursday.

    It had been declared free of Ebola in May but then more cases were found the following month.

  • Ebola: Sierra Leone to vaccinate 200

    Ebola: Sierra Leone to vaccinate 200

    Sierra Leone is to vaccinate around 200 people who came into direct or indirect contact with a woman who died of Ebola on Saturday, a spokeswoman for the World Health Organisation said on Wednesday.

    The death of the woman, a trader from Kambia District near the border with Guinea, sets back efforts to end an 18-month epidemic that has infected more than 28,000 people in Guinea, Sierra Leone and Liberia and killed more than a third of them, Reuters reported.

    The 67-year-old woman died five days after Sierra Leone started a 42-day countdown to being declared free of Ebola. The previous new case of the disease was reported on August 8.

    “We will vaccinate those in the (Tonko Limba) chiefdom who came into direct contact with the deceased and those contacts they also came into close contact with,” said WHO spokeswoman Margaret Harris.

    “We have to ensure that everybody is fully informed and consents,” she said, adding that voluntary vaccinations with a drug that arrived from Guinea and has proved effective there would start on Thursday or Friday.

    The fresh case is discouraging and a reminder of the difficulty of battling Ebola, said Pallo Conteh, head of the National Ebola Response Centre in Sierra Leone, adding that more cases may be recorded as a result of this victim.

    He appealed to a woman he named as the niece of the victim to come forward, saying she was at high risk.

    The outbreak has ebbed only to flare back up since it was first declared in March 2014. Liberia was declared Ebola-free in May, but a fresh cluster of cases appeared nearly two months later. Liberia’s last case was discharged on July 23.

  • Ebola survivors face severe pain, possible blindness

    Ebola survivors face severe pain, possible blindness

    Thousands of West Africans who were infected with the Ebola virus but survived it are suffering chronic conditions such as serious joint pain and eye inflammation that can lead to blindness, global health experts have said.

    Ebola survivors who fought off the most severe bouts of infection are the most likely to suffer ongoing medical problems, World Health Organization experts said, and their health is becoming “an emergency within an emergency.”

    “The world has never seen such a large number of survivors from an Ebola outbreak,” said Anders Nordstrom, a WHO representative in Sierra Leone who took part in a five-day conference this week about Ebola survivors.

    “We have 13,000 survivors in the three countries (Guinea, Liberia and Sierra Leone). This is new – both from a medical and from a societal point of view,” Reuters quoted Nordstrom as saying to reporters on a telebriefing.

    Daniel Bausch of the WHO’s clinical care team on Ebola survivors said about half of all those who fought off the virus now report joint pain, with some suffering such severe effects that they can’t work.

    Eye problems including inflammation, impaired vision and – in severe but rare cases – blindness, have been reported by about 25 percent of survivors, Bausch said.

    Less measurable but equally serious long-term problems, such as increasing rates of depression, post traumatic stress disorder and social exclusion, are also affecting survivors.

    Since West Africa’s devastating Ebola epidemic was by far the largest ever seen – infecting more than 27,000 people and killing almost 11,300 of them – scientists are not able to say whether survivors’ chronic health problems are unusual.

     

  • Thousands of Ebola survivors face severe pain, possible blindness

    Thousands of Ebola survivors face severe pain, possible blindness

    Thousands of West Africans who were infected with the Ebola virus, but survived it, are suffering chronic conditions, such as serious joint pain and eye inflammation that can lead to blindness, global health experts said yesterday.

    Ebola survivors who fought off the most severe bouts of infection are the most likely to suffer ongoing medical problems, World Health Organization experts said, and their health is becoming “an emergency within an emergency”.

    “The world has never seen such a large number of survivors from an Ebola outbreak,” said Anders Nordstrom, a WHO representative in Sierra Leone who took part in a five-day conference this week about Ebola survivors.

    “We have 13,000 survivors in the three countries (Guinea, Liberia and Sierra Leone). This is new – both from a medical and from a societal point of view,” he told reporters on a telebriefing.

    Daniel Bausch of the WHO’s clinical care team on Ebola survivors said about half of all those who fought off the virus now report joint pain, with some suffering such severe effects that they can’t work.

    Eye problems including inflammation, impaired vision and – in severe but rare cases – blindness, have been reported by about 25 percent of survivors, Bausch said.

    Less measurable but equally serious long-term problems, such as increasing rates of depression, post traumatic stress disorder and social exclusion, are also affecting survivors.

    Since West Africa’s devastating Ebola epidemic was by far the largest ever seen – infecting more than 27,000 people and killing almost 11,300 of them – scientists are not able to say whether survivors’ chronic health problems are unusual.

    The Ebola virus is thought to be able to survive no more than 21 days in most body fluids, such as blood and vomit, which are the primary means of transmission.

    But it is also known to be able to lurk in semen and in the soft tissues of the eye for up to several months after recovery.

    Scientists believe the vision impairments reported by survivors of the current outbreak are probably linked to the virus persisting in the eyes.

    Bausch said sight problems, joint pain and headaches have been reported in a few survivors of previous outbreaks since the disease was first detected in 1976. But past epidemics were much smaller, meaning survivor numbers were too small to study or draw any meaningful scientific conclusions.