Common Diseases AIDS · In the nearly 30 years since the first AIDS cases were reported the virus has become a worldwide epidemic. Despite AIDS-related education programs increasing, the spread of the disease has still been staggering. Even more staggering are the numbers of AIDS cases in the African-American community. As recently as 2006, Black Americans made up 45 percent of new AIDS cases despite being just 13 percent of the population. That same year, gay and bisexual black men under the age of 30 accounted for more new HIV cases than any other race or age group. The death rate among African-Americans was also disproportionately large in 2006. While the number of total deaths dropped by nearly 14 percent from the previous year, the number still represented more than half of the HIV- and AIDS-related deaths in the United States. Asthma · While not all of the causes for ast...