President Ellen Johnson Sirleaf of Liberia speaks via video on the international response to the Ebola crisis during a Senate subcommittee hearing on Capitol Hill in Washington on Wednesday. (SAUL LOEB, AFP/Getty Images)

Update Liberian president warns that Ebola still threatens her nation

LOS ANGELES TIMES                                                                                                    Dec. 10, 2014

liberian President Ellen Johnson Sirleaf thanked the Obama administration Wednesday for its efforts in stemming the tide of the country’s Ebola outbreak, but warned that the disease was still a threat in her developing nation.

The American response, a combination of funding and military aid, helped galvanize other countries to join the fight against the epidemic in West Africa, she told the Senate Foreign Relations Committee over video link.

MEDSCAPE MEDICAL NEWS by Larry Hand                                                                        Dec. 9, 2014

Airport exit screening in West Africa and entry screening in the United States have identified few persons potentially infected with Ebola virus, according to an article published online December 9 in the Centers for Disease Control and Prevention (CDC) publication Morbidity and Mortality Weekly Report.

 Number of travelers arriving from Guinea, Liberia, and Sierra Leone who were screened for Ebola at US airports, by state and county of destination (October 11 - November 10, 2014). Source: CDC

Of 80,000 travelers who have departed from West Africa since Ebola-specific screening began, 1993 people have been screened on arrival at one of five US airports. Of those, 86 passengers were referred to the CDC public health officers; only seven have shown symptoms and been referred for evaluation. None eventually wound up with an Ebola diagnosis.

A few months ago the U.S. Centers for Disease Control and Prevention predicted that up to 1.4 million people in Liberia and Sierra Leone could become infected with Ebola by mid-January. In a recent address to the Senate, CDC director Tom Frieden said that worst-case scenario would not pan out.

That is partly because health care workers in the Ebola hot zone are engaged in a battle to contain the epidemic. It is also because of assumptions about human and viral behavior that are built into the mathematical models used to predict the spread of infectious diseases. Assumptions are inherent in these models. “You take islands of data from different places and build bridges of assumptions that link up all these islands,” says Martin Meltzer, senior health economist at the CDC. Meltzer’s model, which predicted the 1.4 million infections in Liberia and Sierra Leone, worked on the assumption that things would not improve. “Our forecasts are based on the idea that nothing will change,” he says.

REUTERS                                                                                                                    Dec. 9, 2014

CHICAGO -- The U.S. Department of Health and Human Services on Tuesday offered liability protections to drugmakers rushing to develop Ebola vaccines and urged other countries to follow suit.

Health and Human Services (HHS) Secretary Sylvia Burwell made the announcement as part of the Public Readiness and Emergency Preparedness (PREP) Act in a move aimed at encouraging the development and availability of experimental Ebola vaccines.

The declaration provides immunity under U.S. law against legal claims related to the manufacturing, testing, development, distribution, and administration of three vaccines for the Ebola virus. However, it does not provide immunity for a claim brought in a court outside the United States...

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http://www.reuters.com/article/2014/12/09/us-health-ebola-vaccine-idUSKBN0JN1S920141209