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.
What is the leading cause of accident? Environmental, material, human number one cause of all auto accidents in the US - distracted drivers. get off the cell phone, stop texting, put the makeup away and set the sâ¦oda down and quit tuning the radio and reading the newspaper and and and pay attention to the road.
In contrast, motor. vehicle traffic crashes were the number one leading cause. of death for people ages 13 through 25 in 2010. This con-. tinued drop in the rank of motor vehicle traffic crashes as. a leading cause of death is attributed to a significant (25%) decline in motor vehicle traffic fatalities over the period. 2005 to 2011. Nevertheless, despite this drop, motor vehi-. cle traffic crashes continue to be among the top 10 leading.