elizabeth loder, md, professor of neurology, harvard medical school; chief, division of headache, brigham & women's hospital. . and prevention says hepatitis a is a vaccine-preventable, communicable disease of the liver caused by a virus. it is usually transmitted person-to-person or by consuming .
"i hit the lottery," derek valenzuela, now 45 and a professional baseball scout for the chicago white sox, said of being born into the family. .