What is the single season highest batting average of any pitcher in MLB history?   Since 1973, the highest single season batting average by a pitcher was in 1993 when Orel Hershiser hit .356 (26 for 73) for the Dodgers. I was not able to find a list ofâ¦ batting averages pre 1973 but I know there has to be one on the Web somewhere.
Causes. Pertussis, a respiratory illness commonly known as whooping cough, is a very contagious disease caused by a type of bacteria called Bordetella pertussis.
No, it is not caused by a virus. It is a bacterial infection cased  by Bordetella Pertussis and gives rise to bouts of coughing spell. No, the disease commonly known as whoop â¦ ing cough is caused by Bordetella Pertussis, a type of bacteria.This is not a viral illness.hooping cough(or pertussis) is caused by a bacteria called Bordetella pertussis. When an infected person coughes or sneezes, the bacteria moves through the air. This is the r â¦ eason Pertussis is an extremely contagious disease. + 28 others found this useful.