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.
Some research suggests that at least a portion of this increase is due to improved reporting of falls, they note. The five leading causes of unintentional injury deaths in US adults aged 65 years or older are falls, motor vehicle traffic accidents, suffocation, poisoning, and fire. In 2012-2013, 14% of unintentional injury deaths in this age group were due to motor vehicle accidents, resulting in more than 6000 deaths per year.