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.
This test checks for Bordetella pertussis antibodies in your blood. B. pertussis are the bacteria that cause pertussis, or whooping cough. Whooping cough is a highly contagious childhood infection that can also affect adults.It can be quite serious and sometimes deadly, especially in children younger than 6 months.Its hallmark symptom is a cough that may last 10 months or longer.. pertussis are the bacteria that cause pertussis, or whooping cough. Whooping cough is a highly contagious childhood infection that can also affect adults. It can be quite serious and sometimes deadly, especially in children younger than 6 months.