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 most common causes of pediatric injury are: 1  Motor vehicle accidents In children ages 5 to 19: Injuries from motor vehicle accidents are the top cause of death from injury. Every hour, almost 150 children visit emergency departments due to serious injuries from motor vehicle accidents.