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.
Introduction. Bordetella pertussis was first isolated in pure culture in 1906 by Bordet and Gengou. Today, B pertussis belongs to the genus Bordetella in the family Alcaligenaceae, which contains several species of closely related bacteria with similar morphology. pertussis and B parapertussis cause whooping cough (pertussis) in humans. Other members of the genus are B bronchiseptica, which causes respiratory disease in various animals and is only occasionally found in humans.