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.
The Centers for Disease Control and Prevention tracks death by cause. One category is unintentional injuries, which encompasses everything from car accidents and falls to drownings and the accidental discharge of a firearm. Unintentional injuries are indeed quite common across most age groups. According to the data, unintentional injury was the leading cause of death in 2013 for Americans among children and adults up to age 44, with one exception: infants.