| outbreak of group a beta hemolytic streptococcus pharyngitis in a peruvian military facility, april 2012. | group a streptococcus (gas), or streptococcus pyogenes, is a common cause of acute pharyngitis as well as other diseases. closed populations such as those living on military bases, nursing homes, and prisons are particularly vulnerable to gas outbreaks due to crowding that facilitates person-to-person transmission. this report details a large outbreak of gas pharyngitis at a peruvian military training facility near lima, peru, in april 2012. initial findings showed 145 cases. however, as the inv ... | 2013 | 23819536 |