Book excerpt: Adds 21 new essays and drops some that appeared in the 1984 edition (first in 1978) to reflect recent scholarship and changes in orientation by historians. Adds entirely new clusters on sickness and health, early American medicine, therapeutics, the art of medicine, and public health and personal hygiene. Other discussions are updated to reflect such phenomena as the growing mortality from HIV, homicide, and suicide. No index. Annotation copyrighted by Book News, Inc., Portland, OR