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Ebolavirus Evolution: Past and Present

PLOS PATHOGENS  by Marc-Antoine de La Vega,  Derek Stein, and GaryKopinger, University of Manitoba, Canada , Nov. 12, 2015    

Winnipeg, Manitoba, Canada The past year has marked the most devastating Ebola outbreak the world has ever witnessed, with over 28,000 cases and over 11,000 deaths. Ebola virus (EBOV) has now been around for almost 50 years. In this review, we discuss past and present outbreaks of EBOV and how those variants evolved over time. We explore and discuss selective pressures that drive the evolution of different Ebola variants, and how they may modify the efficacy of therapeutic treatments and vaccines currently being developed. Finally, given the unprecedented size and spread of the outbreak, as well as the extended period of replication in human hosts, specific attention is given to the 2014–2015 West African outbreak variant (Makona).

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http://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1005221

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The Last Place on Earth With Ebola: Getting Guinea to Zero

NEW YORK TIMES by Dionne Searcey          Nov. 7, 2015

TANA, Guinea  ....

This is the last known place on Earth with Ebola.

After nearly 22 months and more than 11,300 deaths worldwide, the deadliest Ebola epidemic in history has come down to a handful of cases in a cluster of villages in rural Guinea, the country where the outbreak began.

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Mystery Deaths in Sierra Leone Spread Fear of Ebola Relapses

submitted by George Hurlburt

      

Sierra Leonean doctors practice wearing protective clothing in the Ebola Training Academy in Freetown, Sierra Leone, December 16, 2014. Reuters

uk.reuters.com - by Kemo Cham and Emma Farge - October 21, 2015

. . . the case of Scottish nurse Pauline Cafferkey – the first known Ebola survivor to have an apparently life-threatening relapse – has revived concerns about the health of some 17,000 survivors in Sierra Leone, neighbouring Guinea and Liberia.

Doctors and health officials in Sierra Leone told Reuters that a handful of mystery deaths among discharged patients may also be types of Ebola relapses, stirring fear that the deadly virus may last far longer than previously thought in the body, causing other potentially lethal complications.

Diagnoses have not been made, partly because of a lack of relevant medical training and insufficient equipment for detecting a virus that can hide in inaccessible corners of the body - such as the spinal fluid or eyeball. In Cafferkey's case, the virus in her brain caused meningitis.

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G7 Health Ministers Propose Incentives For New Antibiotics, Commit Help On Ebola

INTELLECTUAL PROPERTY WATCH by Catherine Saez, Oct, 12, 2015

(Scroll down for Ministers' Statement.)

The health ministers of the Group of Seven (G7) most developed countries have issued a declaration on antimicrobial resistance and Ebola. The governments said they would explore innovative economic incentives to promote research and development of new antibiotics, such as a global antibiotic research fund and a market entry reward mechanism.

The G7 (Canada, France, Germany, Italy, Japan, United Kingdom, and United States) met from 8-9 October in Berlin and agreed to the Berlin Declaration [pdf] on Antimicrobial Resistance – Global Union for Antibiotics Research and Development (GUARD), aimed at supporting developing countries to develop national antimicrobial resistance action plans.

The G7 health ministers also issued a commitment on lessons learned from Ebola, and supported the 2005 World Health Organization International Health Regulations (IHR), insisting on the need to comply with them.

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Ebola Nurse Pauline Cafferkey 'In Serious Condition'

            

Pauline Cafferkey previously spent a month in the specialist isolation unit at the Royal Free Hospital in London

bbc.com - October 9, 2015

A Scottish nurse who contracted Ebola in Sierra Leone last year is in a "serious condition" after being readmitted to an isolation unit in London.

NHS Greater Glasgow and Clyde confirmed that the virus is still present in Pauline Cafferkey's body after being left over from the original infection.

She is not thought to be contagious.

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Ebola countries record first week with no new cases

BBC   Oct. 8, 2015  
(Scroll down for WHO Report.)                     

The three West African countries at the heart of the Ebola epidemic recorded their first week with no new cases since the outbreak began in March 2014.

                               The Ebola outbreak in West Africa has killed more than 11,000 people

The outbreak has so far killed more than 11,000 people in Guinea, Liberia and Sierra Leone, according to the World Health Organization (WHO).

New cases have fallen sharply in 2015, but the WHO has warned that the disease could break out again.

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http://www.bbc.com/news/world-africa-34471234?utm_source=Copy+of+October+7%2C+2015+EN&utm_campaign=10%2F8%2F2015+fr&utm_medium=email

WHO SITUATION REPORT 7 Oct.  2015

http://apps.who.int/ebola/current-situation/ebola-situation-report-7-october-2015

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UN Ebola response now planned to continue into 2016 after initial hopes it would end by 2015

ASSOCIATED PRESS                               Sept. 23, 2015

(Scroll down for links to WHO reports.)

DAKAR, Senegal (AP) — The United Nations says it's now planning for Ebola response activities to last into 2016, suggesting the battle against the virus won't be over by year-end after all.

In a report released Wednesday by the World Health Organization and its humanitarian partners, health officials said that there are plans for the Ebola response to continue until midyear 2016.

Those so-called Phase 3 efforts include stopping transmission, indicating cases are still anticipated.

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http://www.usnews.com/news/world/articles/2015/09/23/un-ebola-response-now-planned-to-continue-into-2016

WHO SITUATION REPORT                      Sept. 23, 2015
http://apps.who.int/ebola/current-situation/ebola-situation-report-23-september-2015

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Ebola Virus Mutations May Help It Evade Drug Treatment

CLICK HERE - Ebola Virus Mutations May Help It Evade Drug Treatment (2 page .PDF file)

CLICK HERE - Cell Reports - Emergence of Ebola Virus Escape Variants in Infected Nonhuman Primates Treated with the MB-003 Antibody Cocktail

CLICK HERE - Emergence of Ebola Virus Escape Variants in Infected Nonhuman Primates Treated with the MB-003 Antibody Cocktail (11 page .PDF file)

usamriid.army.mil - September 11, 2015

Genetic mutations called “escape variants” in the deadly Ebola virus appear to block the ability of antibody-based treatments to ward off infection, according to a team of U.S. Army scientists and collaborators. Their findings, published online this week in the journal Cell Reports, have implications for the continued development of therapeutics to treat Ebola virus disease, which has claimed the lives of over 11,000 people in West Africa since last year.

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Ebola Assay Card | Elisa-Based Diagnostic - Google Science Fair

submitted by Gavin Macgregor-Skinner

Temperature-Independent, Portable, and Rapid Field Detection of Ebola via a Silk-Derived Lateral-Flow System

googlesciencefair.com - 2015

I developed a “stable and stored at room temperature” Ebola Assay Card, applicable as an ELISA-based diagnostic for diseases such as HIV, Lyme and certain cancers, that will allow for water-activated, timed-release detection of Ebola antigens, with detection limits that are analogous to current sandwich ELISA techniques. Reagents become chemically “stabilized” when mixed into silk, which enables them to remain “chemically active” without refrigeration. This Ebola Assay Card will allow for shipment and storage without refrigeration, and provide detection of the Ebola viral antigens based on color change in as little as 30 minutes.

(CLICK HERE FOR ADDITIONAL INFORMATION)

 

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Feds to end Ebola screening for air travelers from Liberia

USA TODAY by Bart Jansen                           Sept. 19, 2015

WASHINGTON – Federal authorities will end mandatory Ebola screening Monday for travelers from Liberia to five U.S. airports, but will continue to scrutinize travelers from Sierra Leone and Guinea, federal officials announced Friday.

The Department of Homeland Security's Customs and Border Protection had provided extra screening for more than 30,000 travelers during the past year, after an outbreak of the often fatal disease in West Africa.....

Customs and Border Protection and the Centers for Disease Control and Prevention agreed to remove Liberia from the list of countries subject to enhanced visa and port-of-entry screening, effective Monday....

The U.S. will maintain extra screening for travelers from Sierra Leone and Guinea, which still see a handful of new cases each week, and for people who traveled through those countries during the previous three weeks.

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http://www.usatoday.com/story/news/2015/09/18/ebola-travel-airport-screening-liberia-sierra-leone-guinea-customs-border-protection/72398942/

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