The Centers for Disease Control and Prevention will spend $5 million to vaccinate livestock workers against the seasonal flu in an effort to prevent possible interaction with bird flu, officials said today, July 30. If someone gets both the H5N1 (highly pathogenic avian influenza) and seasonal flu, the result could be “an exchange of genetic material” that could do what scientists call “reassortment” and the development of a new influenza virus, said Nirav Shah, the principal deputy director at CDC. Shah spoke to reporters in a call organized by the Health and Human Services Department. The $5 million will go...