Waterhouse, Benjamin, 1754–1846, American physician, b. Newport, R.I. He studied at the universities of Edinburgh and Leiden. In 1783 he became professor on the first faculty of the Harvard medical school. In 1800 he inoculated members of his household with vaccine obtained from England, thus introducing the method of Edward Jenner into America. Inoculation had been used by Zahdiel Boylston and others, but Waterhouse was the first American physician to establish it as a general practice.