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Exclusive: U.S. Ebola researchers plead for access to virus samples

A transmission electron micrograph shows Ebola virus particles in this undated handout image released by the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) in Fredrick, Maryland. Credit: Reuters/USAMRIID/Handout

Image: A transmission electron micrograph shows Ebola virus particles in this undated handout image released by the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) in Fredrick, Maryland. Credit: Reuters/USAMRIID/Handout

reuters.com - November 5th 2014 - Julie Steenhuysen

Scientists across the United States say they cannot obtain samples of Ebola, complicating efforts to understand how the virus is mutating and develop new drugs, vaccines and diagnostics.

The problems reflect growing caution by regulators and transport companies about handling Ebola as well as the limited resources of West African countries which are struggling to help thousands of infected citizens.

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Infection Secrets of Ebola Explained

By attacking the body's first responders, the virus cripples the immune system before it can mount an effective defense

Researchers often describe the battle between the Ebola virus and the humans it occasionally infects as a race—one that people win only if their immune systems manage to pull ahead before the virus destroys too many of their internal defenses. What they may not know is that the virus is a cheat.

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US Officials Unveil Plan to Test Ebola Drugs

NEW ORLEANS --The quest for an Ebola treatment is picking up speed. Federal officials have unveiled a plan to test multiple drugs at once, in an umbrella study with a single comparison group to give fast answers on what works.

"This is novel for us" and is an approach pioneered by cancer researchers, said Dr. Luciana Borio, head of the U.S. Food and Drug Administration's Ebola response. "We need to learn what helps and what hurts" and speed treatments to patients, she said.

She outlined the plan Wednesday at an American Society of Tropical Medicine and Hygiene conference in New Orleans....

Everyone in the umbrella study would get supportive care, such as intravenous fluids, then be assigned to receive one of several drugs or be in a comparison group. That's needed because without one, there's no way to know if any problems or deaths are from the drug or the disease, Cox said....

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EXCLUSIVE-Scientists tell US: find recipe for Ebola cure in survivors' blood

REUTERS                                                     Nov. 7, 2014
By Sharon Begley

NEW YORK - A group of scientists including three Nobel laureates in medicine has proposed that U.S. health officials chart a new path to developing Ebola drugs and vaccines by harnessing antibodies produced by survivors of the deadly outbreak.

The proposal builds on the use of "convalescent serum," or survivors' blood, which has been given to at least four U.S. Ebola patients who then recovered from the virus. It is based on an approach called passive immunization, which has been used since the 19th century to treat diseases such as diphtheria but has been largely surpassed by vaccination.

The scientists propose using new genetic and other technologies to find hundreds or thousands of different Ebola antibodies, determine their genetic recipe, grow them in commercial quantities and combine them into a single treatment analogous to the multi-drug cocktails that treat HIV-AIDS.

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http://www.trust.org/item/20141107142347-pfohr

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New study sheds light on the importance of supportive care for Ebola patients

                                                                     Nov. 6, 2014

...a WHO-coordinated retrospective study, published in the New England Journal of Medicine, provides evidence that supportive care, especially rehydration and correction of metabolic abnormalities, may contribute to patient survival.

The study analysed clinical data on 37 confirmed Ebola patients admitted for treatment at hospitals in Conakry, Guinea’s capital and most densely populated city.

The cases occurred during the first month of West Africa’s first outbreak of Ebola virus disease. Fourteen of the patients were heath care workers. The majority (12) acquired their infection in a health care setting.

The majority (65%) of patients were male, countering assumptions that women, who are more likely to provide home care for patients and prepare bodies for funerals and burials, are more frequently exposed and infected.

To replace fluids lost through severe diarrhoea, 36 patients (97%) received oral rehydration solution. Additional intravenous fluid resuscitation was given to 28 (76%) patients.

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Experimental Ebola drugs should not be withheld, WHO says

World Health Organisation doubts feasibility of placebo-controlled trials in west Africa, but FDA favours ‘gold standard’

THE GUARDIAN                                                                                                           Nov. 6, 2014
By Sarah Bosley

Scientists involved in trials of experimental drug treatments for the Ebola epidemic in west Africa should not be compelled to withhold them from some patients, says the World Health Organisation, despite objections from the US that it is the only way to be sure they work.

Vials of the experimental VSE-EBOV vaccine for Ebola. Photograph: Mathilde Missioneiro/AP

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UT nasal spray vaccine for Ebola effective in monkeys

By Todd Ackerman                                                                           Nov. 5, 2014

... researchers at the University of Texas-Austin have developed a nasal spray vaccine that has protected monkeys against the deadly Ebola virus even a year after immunization.

The vaccine, a genetically engineered cold virus containing a tiny portion of Ebola DNA, saved 100 percent of monkeys who got a single spray through the nose in a new UT study. Injecting the vaccine only saved the lives of about 50 percent.

 
 
 Maria Croyle, a professor of pharmaceutics and the study's principal investigator, said an inhaled Ebola vaccine is more attractive because it would be cheaper and safer than needle-delivered vaccines.

"The main advantage is the long-lasting protection after a single inhaled dose," Maria Croyle, a  professor of pharmaceutics and the study's principal investigator, said in a statement. "This is important since the longevity of other vaccines for Ebola (hasn't been) fully evaluated....

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U.S. Ebola researchers plead for access to virus samples

Image: A transmission electron micrograph shows Ebola virus particles in this undated handout image released by the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) in Fredrick, Maryland. Credit: Reuters/USAMRIID/Handout

reuters.com - November 5th 2014 - Julie Steenhuysen

Scientists across the United States say they cannot obtain samples of Ebola, complicating efforts to understand how the virus is mutating and develop new drugs, vaccines and diagnostics.

The problems reflect growing caution by regulators and transport companies about handling Ebola as well as the limited resources of West African countries which are struggling to help thousands of infected citizens.

Ten scientists from eight major research institutions contacted by Reuters reported they were unable to get Ebola samples in recent months.

(VIEW COMPLETE ARTICLE)


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Canada contributes more money, but no medical workers in Ebola fight

TORONTO GLOBE AND MAIL                               Nov. 3, 2014
By Kelly Grant
Canada is spending another $30.5-million to fight Ebola, but Ottawa is still not answering pleas from international aid organizations for medical personnel to care for the ill in West Africa.

The bulk of the money announced on Monday – $23.5-million – will be spent on testing a Canadian vaccine and an experimental therapy, ZMapp, both of which were developed largely at the National Microbiology Lab in Winnipeg....

A lab technician at the National Microbiology Lab in Winnipeg, Manitoba November 3, 2014.
(LYLE STAFFORD/THE CANADIAN PRESS)

Canada has so far dispatched two mobile laboratories with rotating teams of scientists to rapidly diagnose or rule out Ebola in Sierra Leone.

But Ottawa has been reluctant to send medical staff to West Africa because the government cannot guarantee they could be airlifted out if they fall ill.

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New England researchers help shape the fight on Ebola

THE BOSTON GLOBE                                  Nov. 3, 2014

By Carolyn Y. Johnson

Northeastern University researchers use computers to simulate 20 million virtual Ebola outbreaks each week. Yale scientists are building three models that project the spread of the deadly disease. And a team at Boston Children’s Hospital is combing through data to gauge whether medical interventions are working.

....  they are providing a constant stream of evidence that is beginning to reveal the weak spots of the epidemic. For example, scientists’ models are beginning to identify basic patterns of who is being infected and when and how Ebola is being spread, which could help identify the most meaningful ways to intervene.

...According to their model, isolating three-quarters of the patients within the first four days that they show symptoms would help eliminate the disease.

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http://www.bostonglobe.com/metro/2014/11/02/ebola-disease-modelers-new-england-help-predict-future-spread-best-strategies/LZHSEGlInJs6SflLWW0yaP/story.html

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