Animals given the drug before or shortly after exposure to pox virus survive, whereas untreated animals die.
A reanalysis of data from past studies suggests that low absolute humidity--not low relative humidity, the factor many scientists have studied--helps the virus survive and the flu spread.
Among viruses of the TBE complex, Langat virus from Malaysia is the least virulent for mice, and mice infected intraperitoneally with Langat virus survive and they resist IP challenge by all of the viruses of the TBE complex that were tested.
At body temperature, the SARS virus survived less than four days, the Japanese researchers found.
It is not known whether the latest outbreak in France stems from the virus surviving in wild animals, such as deer, or being reintroduced from elsewhere.
But in many areas, total vaccination has not occurred, and as long as the virus survives anywhere -- in Chechnya, say, or Sierra Leone -- it can spread anywhere else on the globe.
The virus survives refrigeration and freezing and can live for up to a month in the general environment, although heat, sunlight, disinfectants and high acid and alkaline conditions can inactivate it.
Because the virus survived over the winter -- in mosquito populations in storm drains, perhaps, or damp basements -- and has gone much farther afield this summer, health officials fear that it may have become a longterm, even permanent, part of the American landscape of disease.
All animals intranasally immunized with a chimeric virus survived upon challenge with a lethal dose of wild-type B and A viruses, suggesting a framework for the design of a novel live vaccine virus.
Indoor heating makes the air in many homes drier, and several studies have shown that the virus survives better, and is more easily transmitted, when there's less moisture in the air.
One of Schaffner's former students, Dr. Ian Crozier, who contracted Ebola while working as a WHO volunteer in Sierra Leone and was treated at Emory University in Atlanta, authored a study and spoke to the New York Times earlier this year about how the virus survived in his eye and turned it from blue to green.
