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.
Bordetella pertussis is the cause of one of the most contagious human diseases known as. whooping cough. B. pertussis causes severe coughing spells, with a characteristic âwhoopâ made as the. affected person struggles to breathe through narrowed airway passages between coughing spasms. B.