Groups are determined by PRECIPITIN test, serologic test to measure a specific reaction between antigen (C carbohydrate, located in the cell wall) and antibody which results in a visible precipitate. Group A Streptococci (Streptococcus pyogenes) is among the most important human pathogens.
Answers.comÂ® is making the world better one answer at a time. Striking an object is the leading cause of pwc accidents on boats.
In 2012, the leading cause of autobahn accidents was  excessive speed (for conditions) : 6,587 so-called speed related crashes claimed the lives of 179 people, which represents almost half (46.3%) of 387 autobahn fatalities that year.