An epidemiologist makes the case that a rush of research to stop a swine flu outbreak led to an accidental lab release of an ...

The CDC’s Timothy M. Uyeki, M.D., cautioned, however, that if the virus changes, and especially if it begins to infect pigs, ...

A CDC spokesperson said that the effectiveness of the vaccine for H1N1 was "within the range" of previous seasons. "Overall, flu vaccination reduced the risk of hospitalization by about one-third ...

Wearing a mask helps to prevent the spread of respiratory illnesses, according to Centers for Disease Control and Prevention ...

For flu, the CDC is still publishing more detailed weekly ... "type" – influenza A or B – and "subtype" – like H3N2 or H1N1 – that is being reported to the agency from testing laboratories.

Communicating about the threat that H5N1 poses is extraordinarily difficult, as the varying tones of the media coverage of ...

Data from the southern hemisphere show that this year's flu shot was 34.5% effective against hospitalization in high-risk groups during that half of the globe's winter respiratory season.

The likelihood of dairy and poultry workers – those most at risk of catching H5N1– also being infected with seasonal ...

Officials are racing to vaccinate dairy workers against the seasonal flu to prevent the two viruses from combining.

There are four types of influenza virus: A, B, C and D. Influenza A is known to infect humans and other animals, including ...

The CDC is also concerned about the possibility ... take the additional step of depleting each sample of antibodies to H1N1, one of the human flu strains, before it tests the Missouri blood ...

The effectiveness of this year's influenza vaccine was lower in South America than last season, the Centers for Disease ...