HBO miniseries on "John Adams" demonstrates early form of vaccination for smallpox For many who watched Sunday night's airing of "John Adams," the new HBO series, one scene seemed almost barbaric: A doctor makes incisions with a lancet in the arms of Abigail Adams and her children and places smallpox material directly into the wounds. Abigail Adams believed that you could protect healthy people by injecting them with a deadly disease. Wouldn't that be just as dangerous as hanging around with the infected soldiers shown in the movie? No, Abigail knew what she was doing when she insisted that her...