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Information on vaccines to counter Ebola and other diseases

The Mission of this group is to follow the development of vaccines and other medications to counter Ebola and other diseases.

Members

Kathy Gilbeaux mdmcdonald MDMcDonald_me_com mike kraft

Email address for group

vaccines_global@m.resiliencesystem.org

Scientists argue over access to remaining Ebola hotspots

The slowdown in the West African Ebola epidemic is welcome news and reason to be hopeful—but it’s also creating a new problem. With fewer new cases occurring, it is becoming more and more difficult to test vaccines and drugs. As a result, conflicts are looming over who can test Ebola drugs and vaccines in Guinea and Sierra Leone.

An Ebola treatment unit in Guinea.Samuel Hanryon/MSF

In Guinea, a large consortium that includes Doctors Without Borders (MSF) and the World Health Organization (WHO) vaccinated the first volunteers at risk of Ebola on Monday in a big trial of a vaccine produced by Merck and NewLink Genetics. But the team feels threatened because researchers at the U.S. National Institutes of Health (NIH) are looking to move another vaccine study from Liberia, where the epidemic has come to a virtual standstill, to Guinea.

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British medic declared free of Ebola

BBC  by 

A UK female military medic who has been discharged from hospital after being declared free of Ebola said it was thanks to medics that she is alive.

Anna Cross was the first person in the world to be given the experimental Ebola drug MIL 77, her doctors said.

Corporal Cross, aged 25 from Cambridge, caught the virus while working as a volunteer nurse in Sierra Leone.

Doctors at the hospital...described the drug she was given as a close relative of the medicine ZMapp and that MIL 77 was made in China...

It is too soon to know what role the drug played in Cpl Cross' recovery, they added.

Read complete story.
http://www.bbc.com/news/health-32088310

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Ebola whole virus vaccine shown effective, safe in primates

SCIENCE DAILY                                                March 26, 2015

(Scroll down for complete paper.)
An Ebola whole virus vaccine, constructed using a novel experimental platform, has been shown to effectively protect monkeys exposed to the often fatal virus.

The vaccine, described today (March 26, 2015) in the journal Science, was developed by a group led by Yoshihiro Kawaoka, a University of Wisconsin-Madison expert on avian influenza, Ebola and other viruses of medical importance. It differs from other Ebola vaccines because as an inactivated whole virus vaccine, it primes the host immune system with the full complement of Ebola viral proteins and genes, potentially conferring greater protection.

"In terms of efficacy, this affords excellent protection," explains Kawaoka, a professor of pathobiological sciences in the UW-Madison School of Veterinary Medicine and who also holds a faculty appointment at the University of Tokyo. "It is also a very safe vaccine."

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Two experimental Ebola vaccines pass safety test in African trial

REUTERS    by  Sharon Begley                                                                       March 26, 2015

NEW YORK - Two experimental Ebola vaccines, one from GlaxoSmithKline PLC and the other from biotech start-up NewLink Genetics Corp, "appear to be safe" part way through a clinical trial being conducted in Liberia, the U.S. National Institutes of Health (NIH) said on Thursday.

The two vaccines, each given in a single injection, are being tested for safety and efficacy on more than 600 people in Liberia in a mid-stage clinical trial sponsored by the National Institute of Allergy and Infectious Diseases, a branch of NIH.

The Ebola epidemic that began in West Africa one year ago has killed more than 10,200 people, but a decline in new cases in the most affected countries, Liberia, Guinea and Sierra Leone, has led to hopes that it may be ending.

Based on the encouraging safety results, the study may now advance to the next phase of efficacy testing, in which additional volunteers are injected with the GSK vaccine, the NewLink vaccine, or a dummy shot and assessed to see whether their immune system responds by producing anti-Ebola antibodies.

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Ebola Vaccine Trial Starts in Guinea

TIME MAGAZINE  by Alexandra Sifferlin                                             March 25, 2015
An efficacy trial for an Ebola vaccine launched in Guinea on Wednesday.

 

 A health worker prepares a vaccination on March 10, 2015 at a health center in Conakry during the first clinical trials of the VSV-EBOV vaccine against the Ebola virus.

The vaccine, VSV-EBOV, was developed by the Public Health Agency of Canada and has already shown positive results in smaller safety trials. NewLink Genetics and Merck are collaborating on the vaccine, and the Guinean government and World Health Organization (WHO) are leading the trial, which is taking place in Basse-Guinée, a community where many Ebola cases spread.

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New Ebola trial vaccine 'safe': researchers

AFP                                                                                                   March 25, 2015

Paris - The latest in a string of candidate vaccines against the deadly Ebola virus was proven safe in an early trial in healthy adults in China, its developers said Wednesday.

 But while it triggered an antibody response in test subjects, further trials must be held to establish whether the drug actually protects against Ebola, they said.

Dubbed Ad5-EBOV, the vaccine is the first based on the strain of the Ebola virus behind the west African outbreak, according to a paper published in The Lancet medical journal.

Read complete story.
http://news.yahoo.com/ebola-trial-vaccine-safe-researchers-140735607.html;_ylt=AwrBJR6SwhJVFgkANl3QtDMD

Read Lancet article.

http://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2815%2960553-0/abstract

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Study announces a durable vaccine for Ebola

MEDICAL EXPRESS                                                                                             March 25, 2015

A new study shows the durability of a novel 'disseminating' cytomegalovirus (CMV)-based Ebola virus (Zaire ebolavirus; EBOV) strategy that may eventually have the potential to reduce ebolavirus infection in wild African ape species.

These are western lowland gorillas, one of the great ape species threatened by Ebola. Credit: Copyright 2012 Chris Whittier

A cytomegalovirus (CMV)-based vaccine provides long-lasting protective immunity against Ebola virus, and has potential for development as a disseminating vaccine strategy to prevent ebolavirus infection of wild African ape populations.

The multi-institutional study is led by Dr Michael Jarvis at Plymouth University, and is published today, 25th March 2015, in Vaccine.

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Liberians overcome fear to volunteer for Ebola vaccine trial

ASSOCIATED PRESS  by Jpnathan Paye-Layleh             March 22, 2015

MONROVIA, Liberia — Liberians are overcoming their fears of Ebola to volunteer for a vaccine trial...

One year after the World Health Organization declared the Ebola outbreak, vaccine trials are under way in Liberia and Guinea. Sierra Leone will start a trial later this month.

In Liberia, scientists have fanned out across the country to explain the studies and reduce the fear and confusion that have stymied efforts to contain Ebola.

Dr. Stephen Kennedy, the Liberian lead investigator for the study, was among the first people to volunteer for the vaccine trial, getting his injection in front of the media. Similarly, in Guinea, authorities started the study by injecting a series of prominent officials, including the head of the country's Ebola response.

The outreach worked in Liberia, where more than 700 people have volunteered, well beyond the 600 required, according to Kennedy.

Read complete story.
http://news.yahoo.com/liberians-overcome-fear-volunteer-ebola-vaccine-trial-120848405.html

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FDA panel to discuss Ebola vaccine development in May

REUTERS                                                    March 18, 2015

WASHINGTON ==The U.S. Food and Drug Administration said an advisory panel will discuss the development of Ebola vaccines, days after an American health worker was flown back after being tested positive for Ebola in Sierra Leone.

The federal health regulator would discuss the development of vaccines on May 12, it announced on its website on Wednesday.

The resurgence of the virus last year prompted drugmakers from across the world to develop new treatments that are in different stages of studies....

The World Health Organization said it will decide on mass vaccination against the virus in August.

See full story.

http://www.reuters.com/article/2015/03/18/us-health-ebola-fda-idUSKBN0ME1D520150318
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See Federal Register notice of meeting.

https://www.federalregister.gov/articles/2015/03/17/2015-06116/vaccines-and-related-biological-products-advisory-committee-notice-of-meeting

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Ebola vaccine trial to combine GSK, Emergent Bio shots

REUTERS                                                                                                          March 16, 2015

LONDON  - Scientists are to test a new two-shot Ebola vaccine using an experimental shot from Britain's GlaxoSmithKline, which is already in clinical trials in Africa, and a new kind of booster from Emergent BioSolutions.

A health worker, left, injects a man in his arm with an Ebola vaccine in Conakry, Guinea, March 7, 2015. The World Health Organization is starting large-scale testing of an experimental Ebola vaccine in Guinea  to see how effective it might be in preventing future outbreaks of the deadly virus.  (AP Photo/ Youssouf Bah)

The Maryland-based biotech company said on Monday its modified vaccinia Ankara (MVA) Ebola Zaire vaccine would be used in an initial Phase I clinical study to be conducted by researchers at the University of Oxford.

Although Ebola case numbers have fallen to a low level, drug companies are still pushing ahead with efforts to develop an effective vaccine, which may help fight the next outbreak, even if it does not come in time for the current epidemic.

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