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/TB-coinfected patients represent a demographically important TB population, because HIV-infected individuals are 20 times more likely to develop active TB disease (28, 29). Circulating Mtb antigen levels might be increased in these patients, however, as has been observed for other bacterial antigens (30).