Federal officials estimate that 4 percent of American cases were acquired through heterosexual intercourse.

It was also meant to raise the age of consent for heterosexual intercourse.

Only 4 percent of cases have been attributed to infections acquired by heterosexual intercourse.

Evidence indicated that the primary mode of spread was heterosexual intercourse.

The incidence of transmission by heterosexual intercourse is also much higher than the national average.

About 4 percent of American cases so far have been attributed to infections acquired in heterosexual intercourse.

A similar 30 percent decline was registered among people who became infected through heterosexual intercourse.

Health officials say most cases of the disease in Africa are contracted through heterosexual intercourse.

Federal officials say the virus was transmitted through heterosexual intercourse in about 4 percent of the cases.

Four percent of the cases have been attributed to viruses spread through heterosexual intercourse.