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Animal rights groups search Gloucestershire for wounded badgers as second phase of pilot badger cull begins
ANIMAL rights groups have started their search for wounded badgers across Gloucestershire as the second round of the pilot cull has begun.
The next phase of culling started last night in a bid to eradicate bovine TB in cattle by shooting 615 animals, Defra has announced.
Opponents say a vaccination programme would be more effective in tackling the disease.
Scott Passmore, from A Wildlife with Animals which is based in the Forest of Dean, said: “We started at Newent and at one point we were near Deerhurst and I have mammal handling equipment in the car and many badger setts can be seen from the roadside.
“We did not find any wounded badgers last night. But my view is this is totally wrong and if anything this is going to make TB worse.
“They should be addressing the real problem, which is cattle movement and bio-security on farms.
“We have been finding lamb carcasses left in fields, deer heads hanging on trees and we have been finding all sorts of undesirable things left in fields but unfortunately the wildlife is being used as a scapegoat.”
Activists operating for the Gloucestershire Badger Office patrolled most of the zone which lies between the M5, M50 and A40 to guard badger setts from cull marksmen.
Anti-cull campaigner Drew Pratten, from the Forest of Dean, said: “We had a phenomenal amount of support last night including people from Manchester and Derbyshire saying ‘we are here for one night, what can we do’?
“There are people actually guarding setts, people on lookout points and at crossroads where we can see what’s happening.”
NFU president Meurig Raymond said in the South West, where bovine TB is endemic and where herds are being reinfected despite farmers’ best efforts to protect the, controlling the disease in badgers has to be an essential part of any strategy to wipe the disease out.
He said: “Nobody would choose to kill badgers if there was an effective alternative in areas where TB is rife. But if we’re ever going to get on top of TB in areas where the disease is endemic there is no other choice.
“The chief vet has said culling over a four-year period in both pilot areas will have an impact on disease control. I am confident that these pilot culls will help deliver a reduction in bTB in cattle and it is vital that they are allowed to be successfully completed so they can deliver the maximum benefits.
Environmental secretary Elizabeth Truss said the Government is pursuing a comprehensive strategy supported by leading vets which includes cattle movement controls, vaccinating badgers in edge areas and culling badgers where the disease is rife. She said: “This is vital for the future of our beef and dairy industries, and our nation’s food security.
“At present we have the highest rates of bovine TB in Europe. Doing nothing is not an option which is why we are taking a responsible approach to dealing with bovine TB.”
The pilot cull will run for the next six weeks.
Posted in Animal Welfare on 13/09/2014
Canadian beekeepers are suing the makers of popular crop pesticides for more than $400 million in damages, alleging that their use is causing the deaths of bee colonies.
The proposed class action lawsuit was filed Tuesday in the Ontario Superior Court on behalf of all Canadian beekeepers by Sun Parlor Honey Ltd. and Munro Honey, two of Ontario’s largest honey producers, the Ontario Beekeepers Association announced Wednesday.
“The goal is to stop the use of the neonicotinoids to stop the harm to the bees and the beekeepers,” said Paula Lombardi, a lawyer with London, Ont.-based law firm Siskinds LLP, which is handling the case.
As of Thursday morning, more than 30 beekeepers had signed on to participate in the class action.
The lawsuit alleges that Bayer Cropscience Inc. and Syngenta Canada Inc. and their parent companies were negligent in their design, manufacture, sale and distribution of neonicotinoid pesticides, specifically those containing imidacloprid, clothianidin and thiomethoxam.
The pesticides, which are a neurotoxin to insects, are widely coated on corn, soybean and canola seeds in Canada to protect the plants from pests such as aphids. Studies have shown that bees exposed to the pesticides have smaller colonies, fail to return to their hives, and may have trouble navigating. The pesticides were also found in 70 per cent of dead bees tested by Health Canada in 2013.
The European Commission restricted the use of the pesticides for two years and Ontario has indicated it will move toward regulating them, due to concerns over bee health.
Bayer maintains that the risk to bees from the pesticide is low, and it has recommended ways that farmers can minimize bees’ exposure to the pesticide.
Both Bayer and Syngenta told CBC News they wouldn’t comment on the lawsuit because they haven’t yet been served with it.
The lawsuit is seeking more than $400 million in damages, alleging that as a result of neonicotinoid use:
- The beekeepers’ colonies and breeding stock were damaged or died.
- Their beeswax, honeycombs and hives were contaminated.
- Their honey production decreased.
- They lost profits and incurred unrecoverable costs, such as increased labour and supply costs.
Beekeepers or companies involved in beekeeping services such as honey production, queen bee rearing and pollination who are affected and want to join the lawsuit are asked to contact Lombardi.
The Ontario Beekeepers Association is not directly involved in the lawsuit, but along with the Sierra Club Canada Foundation, helped connect beekeepers with the law firm. The association also helped with the research for the lawsuit.
By Bridie Smith, Science Editor, The Age
The noise is piercing and poignant. It starts as a determined drill reminiscent of the “tut-tut” of Skippy – but delivered with a bit more chirrup – then accelerates to a pitch and pace rivalling that of a lorikeet. Then it goes quiet. That’s it. The last call, made by the last Christmas Island pipistrelle bat. It lasts barely 40 seconds.
Before the Christmas Island pipistrelle left the world for good, he was recorded over three nights as he moved through the rainforest. Using ultrasonic pulses of sound to forage for food, this bat was feasting on the fly: expertly catching and consuming insects mid-air. If he was aware scientists were tracking him, he wasn’t obliging them. More than 250 kilograms of equipment had been lugged to the tiny island outpost in the Indian Ocean, 1500 kilometres north-west of the Australian mainland, as part of a desperate attempt to rescue his species.
But he was having none of it. He gave the harp nets and mist nets the slip, zipping over the top, night after night. And he ignored a purpose-built 15-metre-long tunnel trap, despite it being set up in one of his favourite foraging spots, a corridor lined with thick rainforest vegetation. His calls, picked up by detectors, indicated he was active. He flitted between feeding sites and reassured researchers with frequent banter. But on the fourth night, the synchronised detectors planted on his island home met silence. Without intending to, scientists had captured the last call of a species, made on its last night in existence: August 26, 2009.
For scientists, the experience was shattering. Years on, many who made the long trek to the island are still mourning the loss of the tiny 3.5-gram creature. Rupert Baker, life science general manager at Healesville Sanctuary – a Victorian zoo specialising in native Australian animals – was on the expedition and remembers returning to camp burdened with the knowledge that a species had vanished for good. ”Everything on Earth is part of one big complex carpet … and each strand that you take away makes us a little bit more impoverished,” he says.
But for others, the pipistrelle’s plight prompted an uncomfortable question: should the rescue mission have taken place at all? And now, given the limited dollars available for conservation, some respected scientists are calling for a tough new way to preserve the nation’s threatened species: triage.
The concept, first applied during the Napoleonic Wars, is a way of prioritising the treatment of patients. Generally speaking, patients fall into one of three categories: those who are likely to live, regardless of what care they receive; those who are likely to die, regardless of what care they receive; and those for whom immediate care might mean the difference between life and death.
It is a process familiar to viewers of the film and later TV series M*A*S*H, set in the chaos of a mobile military hospital during the Korean War, and that to a lesser degree plays out daily in hospital emergency rooms. In times of disaster and war, it amounts to a pragmatic hierarchy of care based on a patient’s chances of survival given the severity of their condition and the resources available to treat them. Applied to Australia’s native animals, it is a controversial plan that hangs on a reluctant recognition that not all creatures can be saved. Proponents argue that cash should be concentrated on the threatened species with the greatest chance of survival. This means someone is going to have to decide which species get on board the ark, which get left behind, and what criteria should separate the two.
The undulating hills around Healesville, north-east of Melbourne, are neatly stitched with vineyards and fields of dairy cattle. Signs along the road leading to the zoo’s bush sanctuary display phone numbers for motorists who find themselves helping injured wildlife; creatures caught in the path of urbanisation and industry.
Jenny Gray, CEO of Zoos Victoria, is standing in an outdoor enclosure with keeper Monika Zabinskas. The pen, carpeted with leaf litter, houses a one-year-old Tasmanian devil. The animal was born here and, as a result, lives free of the devastating facial-tumour disease that has destroyed 50 per cent of her species across two-thirds of Tasmania. The devil, effectively a teenager, is showing a particularly independent streak. She squirms and grunts as Zabinskas tries to secure her in a handling pouch. Gray looks on, amused. The creature’s snout and whiskers twitch as she arches her neck towards Gray.
This year, Healesville Sanctuary will spend $3.5 million caring for the most critically endangered species under its wing and managing captive-breeding programs. It is not nearly enough for what is needed, so Gray has had to make tough decisions. The first was to exclude Australia’s threatened native fish and native insect species from the program. ”We’re not guaranteeing we can save every fish and every insect,” she says matter-of-factly. ”The fish are not our expertise. And the insects; we just don’t know enough to know how dire the situation is.”
Instead, the zoo has promised that no Victorian land-based vertebrate species will go extinct on its watch. Within these parameters, the organisation will focus its conservation efforts on 20 species, each listed as threatened, each found only in Australia’s south-eastern states. It is a limited form of triage. ”Our promise is that no species will go extinct, so where do we work?” says Gray. “We work right at that tipping point. We work with the animals on the brink of extinction.”
But is it enough? Australia’s animal extinction rate is among the worst in the world; we are now losing one mammal every 20 to 30 years and one bird a decade. More than 1800 species and ecological communities are listed as threatened nationally. Against this decline is a patchwork of funding: some state, some federal, some from the private sector. None of it adds up to the estimated $100 million a year required to stop threatened Australian plants and animals from vanishing. Yet it has been estimated that up to three times as many threatened species could be preserved if funding was allocated using what some argue is a more rational approach.
Hugh Possingham remembers when the penny dropped for him. Then an academic with the University of Adelaide, he was in Canberra in 1999 in a meeting with the federal government’s threatened species unit when it dawned on him that funds were being allocated to species with no real hope of rehabilitation.
Possingham, now with the University of Queensland and a director of the Australian Research Council’s Centre of Excellence for Environmental Decisions, wondered if there was a better way. So he asked. ”People were very hostile,” he recalls. The main concern was that it meant conceding defeat – admitting that some species were beyond saving. “I said, ‘Well, you are giving up on species that are not threatened.’ It’s an argument that has gone back and forward ever since.”
A birdwatcher since the age of 12, he is a vocal advocate of species triage as a means of keeping Australia’s ecosystems diverse and robust. But he argues that tackling a list of already marginal species from the top down is futile. “We should pick winners rather than struggling away with the ones on their last legs,” he says. Rather than concentrating conservation efforts at the “tipping point”, Possingham advocates focusing on ensuring creatures don’t make the threatened list.
Possingham is one of many who believe the Christmas Island pipistrelle’s rescue mission arrived too late to have any realistic chance of success. Widespread when it was first described in 1900, the bats first showed signs of decline in 1994, thanks to a combination of disease and introduced species including the yellow crazy ant, common wolf snake and black rat. The yellow crazy ant invaded the roosting spots of the bats which, being creatures of habit, do not relocate; returning microbats were sprayed with formic acid by the ants and eaten alive. The snake and rat, meanwhile, preyed on the bat, which had evolved free of tree-climbing predators.
Scientists were on the case but powerless to act without the authority of government. The pipistrelle, one of Australia’s smallest bats and the only microbat on Christmas Island, was listed as endangered in 2001, then critically endangered in 2006. By the following year, the bat was effectively on life support. But a rescue mission was only given the nod in July 2009 – by which stage there were as few as 20 bats left. For many, the pipistrelle was already a lost cause.
One of the most haunting exhibits at Healesville Sanctuary is an empty enclosure – or it might as well be. Among the native vegetation is a rust-coloured silhouette of a thylacine. Standing sideways, with its trademark stripes fanning out from the shoulder blades to the base of the tail, the metal sculpture is a silent reminder of what has been lost. Hunted almost to extinction, the last thylacine died at Hobart Zoo on September 7, 1936.
In the quiet hours before dawn, Gray sometimes lies awake and thinks about the thylacine, and about its closest living relative, the Tasmanian devil. ”I worry that one day I’ll be holding a Tasmanian devil in my hands,” she confided during a 2012 Melbourne TED Talk. ”He’ll be old. His fur will be grey. Patches might be missing. His nose will be dull and cracked.” And he will not be just any devil. “He just might be the last Tasmanian devil on the planet,” she says to the now silent audience. “And after I have taken that decision [to euthanase], they won’t exist any more.”
That said, the devil has one big asset in its battle for life: people like devils. It is easier for people to relate to a fellow mammal than to an insect. When the sanctuary’s teenage devil lets out her revving growls and blood-curdling screeches, it’s near impossible not to attach a personality to her behaviour. Her name, Mulana, is a Wurundjeri word meaning spirit.
Research shows that so-called flagship species – namely large mammals with forward-looking eyes – have the greatest marketing appeal and are most commonly used by non-government organisations to raise money for conservation; think the World Wildlife Fund panda. In human triage it would be morally abhorrent to administer care on the basis of affection or appearance, but in animal triage, looks, or at least charm, count.
Consider the critically endangered Baw Baw frog. For unknown reasons, the drab-looking amphibian with mottled brown-black skin suffered a population decline of 98 per cent between 1993 and 2008 in its southern Victorian habitat. Their numbers have slid even further in the past two years, with fewer than 2500 individuals left in the wild. In 2012, the Victorian government pulled up to $20,000 in funding for wild population surveys. Zoos Victoria has stepped in to allow the annual surveys to continue. But it does nothing to arrest the decline.
Compare the Baw Baw’s plight with that of another amphibian, the striking southern corroboree frog. With its butter-yellow and raven-black markings, it often gets described as charismatic. Its appeal is only enhanced by the fact it doesn’t hop (frog-like) but clambers around its mossy habitat in NSW’s Snowy Mountains. Like the Tasmanian devil, it has a fatal disease to contend with: a highly infectious fungal condition called chytridiomycosis that, like the devil’s tumour, has baffled scientists. Listed as critically endangered, there are fewer than 100 remaining in the wild and its alpine home is shrinking as the planet warms. Despite the obstacles, the black and buttercup beauty receives a combined $350,000 a year in conservation funding from five groups, including the NSW government.
But should a frog (albeit a pretty one) with a vanishing alpine home and a tenuous grip on survival have such a slice of the limited cash allocated to saving threatened species? Should a Tasmanian devil with a population decimated by a so-far incurable cancer be allowed to suck up so much of the conservation dollar, beautiful eyes or not?
The devil, however, has another advantage: its contribution to its society. When you consider the role played by any given species in the broader ecosystem, some creatures really are more equal than others. For the devil, Australia’s largest carnivorous marsupial, its position as a top-order predator makes it a keystone in the finely tuned ecosystem. Sitting at the top of the food chain, such species keep every other one in check, stifling the impact of introduced species such as foxes and preventing herbivores such as wombats and wallabies from eating out the habitat faster than it can regenerate.
On this basis alone – its unique role in its environment – the pipistrelle might have had trouble getting aboard the ark. Bats have been around since the time of the dinosaurs, at least 65 million years. Australia has about 75 types of native bat and microbat. Losing the Christmas Island pipistrelle was not going to cripple the local ecosystem.
Not so the endangered southern cassowary. Despite bad press about its antisocial behaviour (the imposing flightless bird has been known to attack and, on at least one occasion, kill humans), it is a vital seed distributor for 238 plants and trees in its north Queensland rainforest home. It is also the only representative of its subspecies on the continent. While habitat loss, cyclones, cars and dogs have reduced its numbers to less than 1000 in the wild – largely concentrated around Mission Beach, Cooktown and on Cape York – a medley of local, state and national governments are working with community and indigenous groups to turn things around for the giant bird.
That said, the greatest contributors to the health of an ecosystem still frequently miss out on conservation attention. A federal government committee told a senate inquiry last year that mammals, birds and flowering plants were represented in greater numbers in conservation efforts than animals that literally have never grown a backbone. Non-flowering plants, which play a vital role in ecosystems and biodiversity, are simply overlooked.
The prehistoric-looking Lord Howe Island stick insect is an unusual invertebrate, in that it is listed nationally and internationally as critically endangered. It also has a dedicated captive breeding program. Not all threatened insects are so lucky. ”Invertebrate animals are 95 per cent of all animal biodiversity but very few invertebrate are listed as threatened species, even though it is likely that many species would qualify for listing if nominated,” the threatened-species committee told the inquiry.
Hugh Possingham believes that rather than assessing bats, frogs and Tasmanian devils according to the odds of them vanishing from the planet, governments should manage biodiversity by weighing up the cost and chances of success against the unique nature, or taxonomic distinctiveness, of the animal. Echidnas and platypus score highly on this taxonomic scale, while a medium-sized wallaby would get a low score given the variety of members in its family tree.
It sounds drastic. But for Possingham, this is how M*A*S*H medics make their life-and-death decisions. ”Biodiversity is being lost at roughly a hundred to a thousand times the natural rate,” he says, almost in exasperation. ”If we are losing species at up to a thousand times the natural extinction rate, then we are effectively in a war zone.”
Opponents say it is not that simple, and that triage amounts to assisted, unnatural selection. The Austral-asian Bat Society argues that no one has the right to play God. The independent, non-profit Australian Wildlife Conservancy maintains that if funds are invested correctly, we should be able to save everything. Threatened-species scientists Deborah Ashworth and Todd Soderquist argue that applying triage to animals and even plants risks placing the most feasible and affordable projects at the top of the list, while letting the more complicated, long-term or expensive slide to the bottom. ”The simplicity of this approach is very seductive,” they warned in their senate submission.
But governments are coming around to Possingham’s way of thinking. In 2005, Queensland was the first state to introduce a triage test, called Back on Track. The logic underpinning the plan was to recover the greatest number of threatened species. Similarly, Tasmania has focused on 171 threatened species it says can be saved over 50 years at a cost of $155 million. And across the Tasman, New Zealand has identified 700 species in decline and prioritised 300 of those most likely to benefit from intervention.
The Australian Fisheries Management Authority has made its own list; starting with 2000 species, its focus over the past five years has narrowed to less than 70. And in NSW, where almost a third of native mammals, 28 per cent of birds, 18 per cent of reptiles and 13 per cent of plants are threatened, the state government has signed up to prioritise 967 threatened species.
Australia’s first threatened-species commissioner, Gregory Andrews, took up his post in July. Among his tasks is to draw up a list of threatened species most likely to benefit from intervention. “I trained as an economist, so I think of the opportunity cost of everything,” he says. “And there are some species that we are spending a lot more on.”
What, then, to make of the Tasmanian devil? An army of scientists is dedicated to saving the species. Captive breeding programs are well established on the mainland, and small islands off Tasmania have been quarantined for healthy devils. But will science deliver a cure in time? Or, more to the point, should we keep investing in the hope that it might? Granted, the devil’s public appeal will keep the dollars dribbling in, even as its population dwindles. But are we taking finite
finances away from another animal that is will score higher on the triage test? Has the devil earned its place on the ark? For Jenny Gray, the answer is clear. ”We won’t walk away,” she says. “It may be a hopeless cause, but it’s our hopeless cause.”
At the sanctuary, I bring the young devil’s swaddled body closer to mine. I open my forearms a little and spread my fingers wide to support the folds of blanket so she can prop her chin on the edge and watch as keepers prepare her bottle. Her weight is satisfying. Not heavy enough to create strain, but not so light as to seem less than substantial. I know she is there. I can feel her move. Her head bobs like one of those toys on a car dashboard as she sniffs the air with the matt-brown nose at the end of her whiskered snout.
So what say we? Does she get a berth?
I read a recent blog post highlighting the feral cat problem in Hawaii (http://rumpydog.com/2014/08/14/so-hawaii-wants-to-kill-cats/). The post mentioned a paper published in Conservation Biology which indicated that Hawaiian residents preferred euthanasia over trap-neuter-release (TNR) programs when it came to feral cat management (http://onlinelibrary.wiley.com/doi/10.1111/cobi.12201/abstract;jsessionid=FB4AAB1970A118DB0073E69D40924627.f01t04?deniedAccessCustomisedMessage=&userIsAuthenticated=false). This study was criticised as being flawed and its findings erroneous by Vox Felina, a group that supports TNR (http://www.voxfelina.com/2014/08/a-response-to-lohr-and-lepczyk/).
Whether or not the Conservation Biology study is flawed is irrelevant. What the residents of Hawaii prefer in this regard is also irrelevant. The fact remains, feral cats should not be present on Hawaii. They were introduced in the 1800s and have caused untold destruction to the native bird life since then. These species, like the birds of New Zealand, evolved without the presence of predators and are ill equipped to deal with them. Neutered cats kill just as many birds as cats that have not been neutered.
The debate over TNR and euthanasia only occurs because we have an emotional attachment to cats that has evolved over many hundreds of years. No one appears to be advocating TNR programs for the possums of New Zealand, the rabbits of Australia or the brown tree snakes running rampant on Guam. Why the inconsistency? All four groups of animals are feral and cause untold damage to their new environments, environments which will only recover properly if these animals are completely removed. The only way the New Zealanders were able to successfully reintroduce any of their endangered birds to their offshore islands was to remove every last cat.
As well as the predation issue cats also carry toxoplasmosis. This disease is caused by a small parasite that needs cats to complete its life cycle. It causes no disease in cats but has killed alala (Corvus hawaiiensis), nene (Hawaiian goose; Branta sandvicensis), red-footed boobies (Sula sula) and even the endangered Hawaiian monk seal (Monachus schauinslandi). Toxoplasmosis is also a zoonosis, posing health risks for pregnant women and immunocompromised people (http://www.usgs.gov/ecosystems/pierc/files/factsheets/cats.pdf).
Unfortunately as long as there are feral cats running around the Hawaiian Islands, its bird species will be at risk of extinction. No TNR programs will remedy that. The only remedy is to remove the cats from the environment. Anything else is nonsensical.
Dr. F. Bunny
Posted in Medicine on 13/08/2014
The Ebola virus was “discovered” in 1976 causing trouble for people living near the Ebola River in the Democratic Republic of Congo (DRC). Since then it has popped up several times in the DRC, Sudan and Uganda. The current outbreak is the first to involve Guinea, Liberia and Sierra Leone.
The virus itself is a filovirus, a group of long filamentous RNA viruses that are surrounded by a lipid envelope. It causes a severe disease in people characterised by vomiting, abdominal pain, fever, headache and bleeding. Symptoms usually appear eight to 10 days after infection but this can range from two to 21 days. Mortality rates can be as high as 90%. Unlike influenza, people tend not to be infectious until they are symptomatic.
The virus is spread via direct contact with blood and body fluids, although there was a publication indicating airborne spread between pigs and monkeys (Weingartl et al 2012). Although not in direct contact the two groups of animals were caged only eight inches apart. According to a second report it appears that the Ebola virus causes a different disease in pigs compared with primates (http://www.vox.com/2014/8/10/5980553/ebola-outbreak-virus-aerosol-airborne-pigs-monkeys/in/5712456). The virus hits the lungs of pigs, whereas the liver is the main target organ in primates. Therefore, while pigs can cough and sneeze out viral particles, primates tend to shed large numbers of virus in the blood and faeces, making airborne transmission unlikely. This is borne out by the current situation. If the Ebola virus was as contagious as the influenza virus we would all be drowning in our own blood by now. Instead the outbreak has remained relatively localised.
The main reservoir of Ebola virus is unknown although, as with most emerging diseases nowadays, bats have been fingered as the main culprit. Ebola has been found in gorillas, chimpanzees and duikers but, as they also develop clinical disease and die, they are unlikely to be a reservoir. However, as they are part of the bush meat cycle they represent a great way for the virus to spread to people.
The virus itself is not particularly hardy. It can survive for several days at room temperature but is destroyed by boiling for five minutes, and common disinfectants such as bleach, phenolics, glutaraldehyde, formaldehyde and 3% acetic acid (vinegar is 4-8% acetic acid). Alcohol hand wipes and washing with soap and water are also effective at killing the virus.
Unfortunately there is no vaccine and no treatment. ZMapp, a drug made of monoclonal antibodies, has been used experimentally but, oddly, there appears to be some debate over the ethics of using this unlicensed drug on people. I know that if I was infected with Ebola and someone waved a drug at me that might or might not work, I would certainly risk it.
The biggest problem in controlling the current epidemic is a lack of infrastructure and knowledge. I can imagine that it is not easy to convince people with very little or no education that a thing that is far too small to see is killing off your family, friends and community. And no, it is not us, the aid workers, who are bringing it in. And yes, you really should stop eating bush meat, even though it is a centuries old tradition. And no, if someone dies don’t wash the body by hand. And yes, we really need you tell us if you, or someone you know, is feeling sick so we can stop them spreading the virus to other people. Please don’t hide them at home. With early medical care they do stand a chance of recovery. Previous Ebola outbreaks had mortality rates of 90%. This one is running at 60%. So it is possible to survive an Ebola infection.
As an interesting aside to the Ebola issue, in 1989 shipments of monkeys were imported into a holding facility in Reston in the US from the Philippines. Those monkeys died with symptoms similar to those caused by an Ebola virus infection. It turned out they were full of a related filovirus subsequently named Reston virus. Interestingly, 14% of the people who had contact with the monkeys had filovirus antibodies, indicating they had also been exposed to the virus. It was just lucky that this, closely related virus, does not appear to cause disease in people. It is amazing that such a small change in viral structure can turn a harmless virus into a lethal one.
Dr. F. Bunny
Weingartl H.M., C. Embury-Hyatt, C. Nfon, A. Leung, G. Smith, and G. Kobinger. 2012. Transmission of Ebola virus from pigs to non-human primates. Scientific Reports 2, 811; DOI:10.1038/srep00811.