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.
The diseases caused by Mycoplasma. bovis can be very variable. These include mastitis, pneumonia, arthritis and genital disorders which can occur in cattle of all ages. The organism has been associated with polyarthritis in feedlot cattle and otitis media in young calves.Subclinical, clinical or chronic mastitis may be caused by Mycoplasma bovis.hese include mastitis, pneumonia, arthritis and genital disorders which can occur in cattle of all ages. The organism has been associated with polyarthritis in feedlot cattle and otitis media in young calves. Subclinical, clinical or chronic mastitis may be caused by Mycoplasma bovis.