Specimens from patients that are positive for the influenza A virus but negative for seasonal flu subtypes such as A(H1) and A(H3) should be prioritized for further testing in a public health ...
Colored scanning electron micrograph (SEM) of H1N1 influenza (flu) virus particles (pink) budding from lung cells. H1N1 is a subtype of the influenza A virus, a family of viruses capable of ...
The influenza vaccine ... strain with the dominant virus strain circulating in Beijing contributed to its effectiveness. Variation in effectiveness among subtypes and age groups highlights ...
Despite nationwide alarm over bird flu, which is a subtype of the Influenza A virus, the CDC currently reports that the threat to the public remains low. There have also been no human-to-human ...