Principle 11. HIV-infected persons, even those whose viral loads are below detectable limits, should be considered infectious. Therefore, they should be counseled to avoid sexual and drug-use behaviors that are associated with either transmission or acquisition of HIV and other infectious pathogens.No data are available concerning the ability of HIV-infected persons who have antiretroviral therapy-induced suppression of HIV replication to undetectable levels (assessed by plasma HIV RNA assays) to transmit the infection to others. Similarly, their ability to acquire a multiply resistant HIV variant from another person remains a possibility. HIV-infected persons who are receiving antiretroviral therapy continue to be able to transmit serious infectious diseases to others (e.g., hepatitis B and C and sexually transmitted infections, such as herpes simplex virus, human papillomavirus syphilis, gonorrhea, chancroid, and chlamydia) and are themselves at risk for infection with these pathogens, as well as others that carry serious consequences for immuno-suppressed persons, including cytomegalovirus and human herpes virus 8 (also known as KSHV). Therefore, all HIV-infected persons, including those receiving effective antiretroviral therapies, should be counseled to avoid behaviors associated with the transmission of HIV and other infectious agents. Continued reinforcement that all HIV-infected persons adhere to safe-sex practices is important. If an HIV-infected injecting-drug user is unable or unwilling to refrain from using injection drugs, that person should be counseled to avoid sharing injection equipment with others and to use sterile, disposable needles and syringes for each injection.
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