Background. Infection with Streptococcus pyogenes, a beta-hemolytic bacterium that belongs to Lancefield serogroup A, also known as the group A streptococci (GAS), causes a wide variety of diseases in humans.
Elm Grove is a village in Waukesha County, Wisconsin, United States. The population was 6,249 at the 2000 census. Elm Grove is located at 43Â°2â²52â³N 88Â°5â²12â³W / 43.04778Â°N 88.08667Â°W / 43.04778; -88.08667 (43.047662, -88.086750). According to the United States Census Bureau, the village has a total area of 3.3 square miles (8.4 kmÂ²), all of it land.
Elmhurst is a suburb of Chicago in DuPage and Cook Counties, Illinois. The population is 46,013 as of the 2008 US Census population estimate. Members of the Potawatomi Indian tribe, who settled along Salt Creek just south of where the city would develop, are the earliest known settlers of the Elmhurst area. Around 1836, European immigrants settled on tracts of land along the same creek.