Tapeworms of the Taenia and Echinococcus species can also be contracted by humans via accidental ingestion of cat feces containing infectious tapeworm eggs. The only form of Echinococcus transmissable by cats is that causing alveolar echinococcus.
Anyone can contract HIV, and while IDUs are at great risk because of practices related to their drug use, anyone who engages in unsafe sex (e.g., unprotected sex with an infected partner) could be exposed to HIV infection.frican-Americans account for a higher proportion of HIV infections than any other population at all stages of the disease from initial infection to death (see text box). Moreover, specific minority subgroups are at particular risk.
HIV/AIDS. HIV Risk and Prevention. In the United States, HIV is mainly spread by having sex or sharing syringes and other injection equipment with someone who is infected with HIV. Substance use can contribute to these risks indirectly because alcohol and other drugs can lower peopleâs inhibitions and make them less likely to use condoms.