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Situation Report

The State of Vaccine Confidence

The Vaccine Confidence Project    2015
LONDON SCHOOL OF HYGIENE AND TROPICAL MEDICINE 

Lead Authors:  Heidi Larson, PhD and Will Schulz, MPH
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Aid workers racing to defeat Ebola before the rains come

USA TODAY  by Samwar Fallah and Gregg Zoroya                                              March 28, 2015

MONROVIA, Liberia — Aid workers are rushing into neighboring Guinea to try to stanch a worrisome rise in cases of the deadly Ebola virus, which has been slowed in Sierra Leone and been all but eradicated here.

A man crouches next to the grave of an unknown man (L) at the National Memorial Cemetry on Disco Hill, Margibi County, Liberia, 11 March 2015. The cemetery was established to provide a dignified burial for ebola victims and bring an end to the usual cremation of victims during the outbreak. Liberia on 11 March observed a National Memorial Day to remember, honour, and decorate the graves of the dead. The government of Liberia on 05 March discharged the last ebola patient, thus raising the hopes of the end of the epidemic. EPA/AHMED JALLANZO ORG XMIT: MON107(Photo: AHMED JALLANZO, EPA)

The mission is urgent because the coming rainy season could hamper travel to remote villages where the disease continues to emerge.

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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 virus not mutating as quickly as thought

SCIENCE NEWS  by Ashley Yaeger                                                      March 26, 2015

(Scroll down for full study.)

The virus causing the current Ebola epidemic in West Africa is not evolving as quickly as some scientists had suggested.

REGULAR RATE  A genetic analysis suggests that the Ebola virus, shown here in orange, is not evolving as fast as expected.

In a paper last August, researchers reported that the virus (Zaire ebolavirus) was altering its genes almost twice as fast as it had during previous Ebola outbreaks in Central Africa (SN: 9/20/14, p. 7). However, a new genetic analysis shows that the virus is mutating at roughly the same rate as in past outbreaks, researchers report online March 26 in Science. The finding suggests the virus has not become more virulent or transmissible during the West Africa outbreak.

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Ebola upsurge could undo progress in blink of an eye, warns expert

THE GUARDIAN by Sam Jones                           March 26, 2015

Despite the massive push to bring the number of new Ebola cases down to zero as quickly as possible, there will inevitably be “flare-ups” that could reverse the overall downward trend and prove difficult to contain, the UN’s response co-ordinator has warned.

Dr David Nabarro, the UN’s special envoy for Ebola, said the huge medical, administrative and logistical operation to fight the disease could still be set back by individuals ignoring official advice.

“There will be flare-ups, there will be disappointments; there will be people who evade quarantine – because nobody likes being told to stay put – there will be people who choose not to declare that they’ve got a relative ill, there will be people who get ill and just misdiagnose themselves,” he said....

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Dr. Gavin Macgregor-Skinner - Ebola - Health Organizations Slow to Respond

      

CLICK HERE - RECORDED VIDEO - Dr. Gavin Macgregor-Skinner

ctvnews.ca - March 23, 2015

Public health emergency expert Dr. Gavin Macgregor-Skinner discusses a new report saying faster action would have stopped the spread of Ebola.

CLICK HERE - MSF REPORT AND RELATED INFORMATION

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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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Ebola Death Rates Vary Widely by Age Group

LIVE SCIENCE       by

Young children who are infected with Ebola may be more likely to die from the virus than older children or adults who are infected, according to a new study.

 In the study, researchers examined Ebola cases in children younger than 16 during the current outbreak in Guinea, Liberia and Sierra Leone, and compared them with adult cases. They found that the outbreak's death rate has been higher among younger children than among older children and adults.

The disease has killed about 90 percent of infected children under age 1, and about 80 percent of kids ages 1 to 4 who have been infected. Older children who have been infected with Ebola may have a much better chance of surviving....

"The very youngest of children — neonates  —appear to have the worst outcomes from Ebola," study co-author Dr. Robert Fowler, an associate professor of critical-care medicine at the University of Toronto, said in a statement. (Neonates, or newborns, are babies younger than 1 month.)

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Strengthening the Detection of and Early Response to Public Health Emergencies: Lessons learned from, the Ebola outbreake

PLOS MEDICINE by Mark J. Siedner, Lawrence O. Gostin, Hilarie H. Cranmer,and John D. Kraemer                        March 24, 2015

In-depth paper on lessons learned from the West Africa Ebola outbreak

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