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Health - Sierra Leone

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This working group is focused on discussions about health.

The mission of this working group is to focus on discussions about health.

Members

Carrielaj Chisina Kapungu davidmc Kathy Gilbeaux mdmcdonald MDMcDonald_me_com
mike kraft Obilia Kamara Paulshido

Email address for group

health_sierra_leone@m.resiliencesystem.org

A New Weapon in Fight Against Ebola

The team has achieved an unprecedented goal: connecting 12 fullerenes, each one endowed with 10 sugar moieties, to other central fullerene, thus mimicking the presentation of carbohydrates surrounding the Ebola virus.  Credit: N. Martín & B. Illescas / UCM

CLICK HERE - A giant fullerene system inhibits the infection by an artificial Ebola virus

CLICK HERE - STUDY - Synthesis of giant globular multivalent glycofullerenes as potent inhibitors in a model of Ebola virus infection

scitechconnect.elsevier.com - by SPLICE - November 19, 2015

A discovery which may lead to the elimination of Ebola infections was published in Nature Chemistry a few days ago. The investigators reported that giant fullerene system inhibits the cell infection by an artificial Ebola virus.

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Is Ebola Virus One-Up Against Bats?

submitted by George Hurlburt      

         

CLICK HERE - STUDY - Filovirus receptor NPC1 contributes to species-specific patterns of ebolavirus susceptibility in bats

socialnews.xyz - December 24, 2015

Ebola virus and bats have been waging a molecular battle for survival that may have started at least 25 million years ago, revealed a new study led by an Indian-origin scientist.

The findings shed light on the biological factors that determine which bat species may harbour the virus between outbreaks in humans and how bats may transmit the virus to people. . . .

. . . The study was published online in the journal eLife.

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WHO Publishes List of Top Emerging Diseases Likely to Cause Major Epidemics

              

WHO Strategic Health Operations Centre (SHOC) Room - WHO /Christopher Black

who.int

A panel of scientists and public health experts convened by WHO met in Geneva this week to prioritise the top five to ten emerging pathogens likely to cause severe outbreaks in the near future, and for which few or no medical countermeasures exist. These diseases will provide the basis for work on the WHO Blueprint for R&D preparedness to help control potential future outbreaks.

The initial list of disease priorities needing urgent R&D attention comprises: Crimean Congo haemorrhagic fever, Ebola virus disease and Marburg, Lassa fever, MERS and SARS coronavirus diseases, Nipah and Rift Valley fever. The list will be reviewed annually or when new diseases emerge.

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ALSO SEE RELATED ARTICLE HERE - The most dangerous pathogens, according to WHO

 

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We’ve Learnt Many Lessons from This Outbreak and From the Response – Dr. David Nabarro, Special Envoy on Ebola

          

Dr. David Nabarro, Special Envoy on Ebola, at a press conference in New York in November 2015. UN Photo/Loey Felipe

un.org

10 December 2015 – In August 2014, amid a rapidly growing outbreak of Ebola, Dr. David Nabarro was tasked with providing strategic guidance for an enhanced international response, and galvanizing essential support for affected communities and countries. As the Secretary-General’s Special Envoy on Ebola, Dr. Nabarro played a key role in responding to the outbreak, which mainly affected Guinea, Liberia and Sierra Leone, and claimed more than 11,300 lives to date.

While the Ebola outbreak in West Africa has declined significantly in recent months, it is not completely over, making it all the more vital for everyone involved in the response to remain vigilant and focused on stopping the outbreak, staying at zero cases and preventing re-emergence. The Office of the Special Envoy will end its mandate on 31 December 2015, but the UN system will continue to remain fully engaged with the affected countries. 

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Liberia’s Ebola Outbreak Largely Traced to One Source

            

BRANCHING OUT  In Liberia, a single lineage of Ebola virus (middle dot) split into subgroups as it passed from person to person and mutated. Each dot is a slightly different version of the virus within the subgroups. Dot size indicates how many people carried that version. Researchers tracked the virus as it spread from Liberia (blue) into Guinea (red) and Mali (yellow).  J.T. Ladner et al/Cell Host & Microbe 2015

CLICK HERE - STUDY - Evolution and Spread of Ebola Virus in Liberia, 2014–2015

Genetic analysis of third hard-hit country fills in gaps in virus’ spread and evolution

sciencenews.org - by Tina Hesman Saey - December 9, 2015

A single introduction of the Ebola virus led to most cases of the deadly disease in Liberia, a new genetic study suggests.

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Stopping Ebola in its Tracks: a Community-Led Response

reliefweb.int - globalcommunities.org - December 1, 2015

The public view of the Ebola response was dominated by images and stories of medical workers and Ebola treatment units. But there is also the less-known story of the many thousands of Liberian health workers, government staff, traditional leaders and volunteers who played the most significant role in building resilience to Ebola and reducing transmission and infection. It is these groups, working in the frontlines and at significant risk, which Global Communities partnered with throughout the Ebola response.

Global Communities’ approach to countering the Ebola outbreak has been highlighted by President Obama, Dr. Rajiv Shah, former Administrator of USAID, and many others as having been a key component in the successful fight against Ebola in Liberia in the 2014-15 outbreak. This new publication “Stopping Ebola in its Tracks,” has two strands:

It describes Global Communities’ community-driven response to the Ebola outbreak in Liberia

It derives from this experience lessons learned and recommendations for preventing and dealing with future disasters

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Disease Specialists Identify Post-Ebola Threats

             

The West Africa Ebola outbreak has led experts to consider what diseases might spark the next major infectious disease crisis. Waldo Swiegers/Bloomberg via Getty Images

Scientists to assemble a rogues’ gallery of viruses likely to spark the next international public-health crisis

nature.com - by Erika Check Hayden - December 7, 2015 - doi:10.1038/nature.2015.18952

As West Africans try to bring the calamitous Ebola outbreak to an end, the World Health Organization (WHO) has called scientists and doctors to Geneva, Switzerland, on 8 and 9 December to discuss which infectious disease is likely spark the next pandemic. . . 

. . . Nature canvassed infectious-disease specialists to find out which pathogens they thought would trigger the next global crisis, and which treatments and vaccines might be readied to combat them.

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Mathematical Modeling of the West Africa Ebola Epidemic

eLife 2015;10.7554/eLife.09186 - December 8, 2015
DOI: http://dx.doi.org/10.7554/eLife.09186

Abstract

As of November 2015, the Ebola virus disease (EVD) epidemic that began in West Africa in late 2013 is waning. The human toll includes more than 28,000 Ebola virus disease (EVD) cases and 11,000 deaths in Guinea, Liberia, and Sierra Leone, the most heavily-affected countries. We reviewed 66 mathematical modeling studies of the EVD epidemic published in the peer-reviewed literature to assess the key uncertainties models addressed, data used for modeling, public sharing of data and results, and model performance. Based on the review, we suggest steps to improve the use of modeling in future public health emergencies.

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Identification of NPC1 as the Target of U18666A, an Inhibitor of Lysosomal Cholesterol Export and Ebola Infection

eLife 2015;10.7554/eLife.12177 - DECEMBER 8, 2015
DOI: http://dx.doi.org/10.7554/eLife.12177

Abstract

Niemann-Pick C1 (NPC1) is a lysosomal membrane protein that exports cholesterol derived from receptor-mediated uptake of LDL, and it also mediates cellular entry of Ebola virus. Cholesterol export is inhibited by nanomolar concentrations of U18666A, a cationic sterol. To identify the target of U18666A, we synthesized U-X, a U18666A derivative with a benzophenone that permits ultraviolet-induced crosslinking. When added to CHO cells, U-X crosslinked to NPC1. Crosslinking was blocked by U18666A derivatives that block cholesterol export, but not derivatives lacking blocking activity. Crosslinking was prevented by point mutation in the sterol-sensing domain (SSD) of NPC1, but not by point mutation in the N-terminal domain (NTD). These data suggest that the SSD contains a U18666A-inhibitable site required for cholesterol export distinct from the cholesterol-binding site in the NTD. Inasmuch as inhibition of Ebola requires 100-fold higher concentrations of U18666A, the high affinity U16888A-binding site is likely not required for virus entry. 

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