Prior exposures to specific types of seasonal influenza viruses promote cross-reactive immunity against the H5N1 avian ...
Measles is unlike other childhood viruses. In severe cases, it can cause pneumonia. About 1 in 1,000 patients develops ...
Older adults who were exposed to seasonal flu viruses that circulated prior to 1968 are more likely to have some protection ...
PHILADELPHIA— Prior exposures to specific types of seasonal influenza viruses promote cross-reactive immunity against the H5N1 avian influenza virus ...