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.
Etiology and History. Pertussis is caused by Bordetella pertussis. Bordetella pertussis was first recognized by Bordet and Gengou in 1906. The genus Bordetella is known for five different species that cause respiratory disease in humans and animals.The five species are as follows, B. pertussis B parapertussis, B. bronchi septica, B. avium and B hinzu.ordetella pertussis was first recognized by Bordet and Gengou in 1906. The genus Bordetella is known for five different species that cause respiratory disease in humans and animals. The five species are as follows, B. pertussis B parapertussis, B. bronchi septica, B. avium and B hinzu.