61.   Tuberculosis is caused by airborne bacteria and usually is spread by prolonged contact with an infected person.

62.   Tuberculosis usually is transmitted to people who remain for hours in close quarters with an infected person, breathing their coughs and sneezes.

63.   Unlike anthrax, smallpox spreads directly from person to person, usually when an infected person coughs, he said.

64.   Tuberculosis is a bacterial lung disease spread when an infected person coughs, sneezes, sings or laughs.

65.   Tuberculosis is usually transmitted through the air when an infected person coughs, sneezes, talks or spits.

66.   Typhoid fever germs are excreted in the stool of an infected person and can be spread if they contaminate food or water.

67.   Typhoid fever is transmitted by eating or drinking food or beverages contaminated with bacteria from an infected person.

68.   When a health department employee notifies a partner of potential contact, the infected person is not identified by name.

69.   Why does AIDS predispose infected persons to certain types of cancer and infections and not others?

70.   With infected persons holding off symptoms for longer periods and those with AIDS living longer lives, the yardstick has warped.