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Scientists: 'Positive' results in 1st human trial of experimental Ebola vaccine

CNN -- By Laura Smith-Spark                              Nov. 27, 2014

The first human trial of an experimental Ebola vaccine has produced promising results, U.S. scientists said, raising hopes that protection from the deadly disease may be on the horizon.

All 20 healthy adults who received the vaccine in a trial run by researchers from the National Institutes of Health in Maryland produced an immune response and developed anti-Ebola antibodies, the NIH said Wednesday.

None suffered serious side effects, although two people developed a brief fever within a day of vaccination.

The vaccine is being developed by the NIH's National Institute of Allergy and Infectious Diseases and British pharmaceutical giant GlaxoSmithKline. The process has been fast-tracked in light of the current catastrophic Ebola outbreak in West Africa, which has claimed more than 5,000 lives.

http://www.cnn.com/2014/11/27/health/ebola-outbreak/

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The Race for an Ebola Vaccine

Description of efforts by the big drug companies to develop an Ebloa vaccine
THE NEW YORKER    By Vauhine Vara                        Nov. 25, 2014

"...why this race to create an Ebola vaccine among Merck, GlaxoSmithKline, and Johnson & Johnson—three of the world’s biggest drug manufacturers? For years, pharmaceutical companies didn’t invest much in vaccines, partly because they were so costly and complicated to produce: they’re often made out of live bacteria, which are notoriously difficult to work with. But, over the past several years, companies have realized that the difficulties of making vaccines could be an asset, because they can make it more difficult for generic-drug companies to create copycat versions than for prescription drugs. The vaccine market has also been growing more quickly than the prescription-drug market. The World Health Organization estimates, based on various sources, that global vaccine sales rose from five billion dollars in 2000 to twenty-four billion dollars last year...."

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http://www.newyorker.com/business/currency/race-ebola-vaccine

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Projected Impact of Vaccination Timing and Dose Availability on the Course of the 2014 West African Ebola Epidemic

PLOS CURRENT OUTBREAKS                                                                              Nov. 21, 2014
By David Fisman and Ashleigh Tuite, Dalla Lana School of Public Health, University of Toronto

As removal of population-level susceptibility through vaccination could be a highly impactful control measure for this epidemic, we sought to estimate the number of vaccine doses and timing of vaccine administration required to reduce the epidemic size. Our base model was fit using the IDEA approach, a single equation model that has been successful to date in describing Ebola growth. We projected the future course of the Ebola epidemic using this model. Vaccination was assumed to reduce the effective reproductive number. We evaluated the potential impact of vaccination on epidemic trajectory under different assumptions around timing of vaccine availability.

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Here’s How the Ebola Vaccine Trial Is Doing

TIME MAGAZINE By Alexandra Sifferlin                          Nov. 25, 2014
 By  Alexandra Sifferlin                       

Scientists are scurrying to get their Ebola vaccines through the necessary safety trials before they can be used widely. That includes the University of Maryland School of Medicine, which recently kicked off the latest step in their research: figuring out the appropriate dosing for the vaccine that’s both effective and safe.

The University of Maryland is one of a handful of institutions involved in the testing of an experimental but promising vaccine developed by the National Institutes of Health’s Vaccine Research Center (VRC) and GlaxoSmithKline (GSK). The hope is that the vaccine will pass through early trials needed by end of December so that the World Health Organization (WHO) and a panel of outside experts can decide whether to move on to a large efficacy trial, which would mean vaccinating a lot of people in West Africa to see how well it works.

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WHO plans to speed development of Ebola rapid test

CENTER FOR INFECTIOUS DISEASE RESEARCH AND POLICY
By Lisa Schnirring                                               Nov.18, 2014

Quicker and simpler diagnostic tests for Ebola could go a long way in helping break chains of disease transmission in West Africa's outbreak region, the World Health Organization (WHO) said today, as it unveiled two new initiatives to expedite their development.

The WHO said it hopes new efforts—similar to those under way to test and deliver an Ebola vaccine—can compress the development of a rapid test in months instead of years.

A Navy worker extracts RNA from a patient sample at a Naval mobile lab in Liberia. US Army Africa

Standard reverse-transcriptase polymerase chain reaction (RT-PCR) tests used in mobile and other labs in the outbreak are very accurate when conducted by trained staff, but they require a full tube of blood, take 2 to 6 hours to get a result, and costs around $100 per test, the WHO said today in a statement....

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WHO starts survey of Ebola treatments, says none proven so far

UPDATE:   Additonal information on the WHO discussions of potential Ebola treatments.

(Scroll down)

REUTERS                                                      Nov. 14, 2014

By Tom Miles

GENEVA --The World Health Organization (WHO) has begun assessing more than 120 potential treatments for Ebola patients, it said on Friday, but so far has found none that definitely work, and some that definitely do not....

The apparent effect of ZMapp or other drugs that have been tried may simply be a result of the good care that the patients had received, or the fact that they were well-nourished before they fell sick, or because of other medicines, Friede said.

Medecins Sans Frontieres plans to start trials next month of the drugs brincidofovir, from the U.S. firm Chimerix, and favipiravir, from Japan's Fujifilm, and to see how well blood plasma from Ebola survivors may work in curing those still infected....

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http://www.reuters.com/article/2014/11/14/us-health-ebola-who-treatments-idUSKCN0IY1CR20141114

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Bats’ Link to Ebola Finally Solved

 

THE DAILY BEAST                                                                                                           Nov. 11, 2014
By Carfrie Arnold

A new paper outlines five steps required for a virus to ‘spill over’ from bats to humans. But don’t just blame the bats—deforestation and hunting are to blame, too.

These nocturnal fliers might do some good, but their association with night, rabies, and All Things Creepy means that, at best, we tolerate them. Adding to their negative aura is recent research showing that bats can be the source of infectious diseases like SARS and Ebola, as well as lesser-known pathogens like Hendra and Nipah virus.

It’s all too easy to blame bats for causing these human pandemics, including the most recent (and deadliest) Ebola outbreak. After all, these viruses hang out in bats in between outbreaks—trace any outbreak of these viruses back far enough and you will find a bat.

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Out of Africa — Caring for Patients with Ebola

NEW ENGLAND JOURNAL OF MEDICINE                                                                  Nov. 12, 2014

Eric J. Rubin, M.D., Ph.D., and Lindsey R. Baden, M.D.

The Journal has now published detailed clinical information about three patients transferred from West Africa to the United States or Germany in the midst of their illness.

See details of the treatment

http://www.nejm.org/doi/full/10.1056/NEJMe1412744

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Out of Africa — Caring for Patients with Ebola

NEW ENGLAND JOURNAL OF MEDICINE                                                                  Nov. 12, 2014

Eric J. Rubin, M.D., Ph.D., and Lindsey R. Baden, M.D.

The Journal has now published detailed clinical information about three patients transferred from West Africa to the United States or Germany in the midst of their illness.

See detais of the treatment

http://www.nejm.org/doi/full/10.1056/NEJMe1412744

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Doctors Without Borders will begin Ebola drug studies by December in Africa

USA TODAY                                         Nov. 12, 2014
by Liz Sazbo

Doctors Without Borders will begin clinical trials of three experimental Ebola therapies in West Africa in December, the aid group announced Wednesday.

The studies, to be conducted at the group's treatment centers in Guinea and Liberia, will test therapies already used in some Ebola patients in the USA and Europe: the antiviral drugs brincidofovir and favipiravir, as well as blood donations from Ebola survivors.

Brincidofovir, made by Chimerix of North Carolina, was given to cameraman Ashoka Mukpo, Liberian national Thomas Eric Duncan and physician Craig Spencer. Mukpo and Spencer survived. Duncan received the drug just a couple days before he died.

Favipiravir, an anti-flu drug made by Japan's Fujifilm Holding Corp., was given to a French nurse who worked with Doctors Without Borders.

And blood donations from Ebola survivors, which contain antibodies against the virus, have been used since the first Ebola outbreak in 1976.

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http://www.usatoday.com/story/news/nation/2014/11/12/ebola-clinical-trial/18919401/

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