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  2. HIV - Wikipedia

    en.wikipedia.org/wiki/HIV

    HIV-1 is more virulent and more infective than HIV-2, [20] and is the cause of the majority of HIV infections globally. The lower infectivity of HIV-2, compared to HIV-1, implies that fewer of those exposed to HIV-2 will be infected per exposure. Due to its relatively poor capacity for transmission, HIV-2 is largely confined to West Africa. [21]

  3. Pathogen transmission - Wikipedia

    en.wikipedia.org/wiki/Pathogen_transmission

    An infectious disease agent can be transmitted in two ways: as horizontal disease agent transmission from one individual to another in the same generation (peers in the same age group) [3] by either direct contact (licking, touching, biting), or indirect contact through air – cough or sneeze (vectors or fomites that allow the transmission of the agent causing the disease without physical ...

  4. Human viruses in water - Wikipedia

    en.wikipedia.org/wiki/Human_viruses_in_water

    For instance, an article published in 2018 noted that it takes one year for certain viruses including poliovirus and echovirus to decrease by a 5log unit at a temperature of 4°C, while it takes only a week to obtain same result at a temperature of 37°C (human body temperature). The rate of protein, nucleic acid denaturation and chemical ...

  5. HIV/AIDS - Wikipedia

    en.wikipedia.org/wiki/HIV/AIDS

    Criminal transmission of HIV is the intentional or reckless infection of a person with the human immunodeficiency virus (HIV). Some countries or jurisdictions, including some areas of the United States, have laws that criminalize HIV transmission or exposure. [298] Others may charge the accused under laws enacted before the HIV pandemic.

  6. Pathophysiology of HIV/AIDS - Wikipedia

    en.wikipedia.org/wiki/Pathophysiology_of_HIV/AIDS

    HIV is commonly transmitted via unprotected sexual activity, blood transfusions, hypodermic needles, and from mother to child. Upon acquisition of the virus, the virus replicates inside and kills T helper cells , which are required for almost all adaptive immune responses .

  7. Undetectable = Untransmittable - Wikipedia

    en.wikipedia.org/wiki/Undetectable_=_Untransmittable

    The campaign seeks to spread the scientific evidence that undetectable means untransmittable. Since the beginning of the epidemic, perceptions and management of HIV infection have gone through many stages; from assuming the infectiousness, then discovering the routes of transmission (blood, sexual fluids, and breastfeeding), to prevention methods (education, condoms, PrEP, and PEP) and various ...

  8. Microbicides for sexually transmitted infections - Wikipedia

    en.wikipedia.org/wiki/Microbicides_for_sexually...

    The trial, CAPRISA 004, was conducted among 889 women to evaluate the ability of 1% tenofovir gel to prevent male-to-female HIV transmission. The study found a 39% lower HIV infection rate in women using 1% tenofovir gel compared with women using a placebo gel. In addition, tenofovir gel was shown to be safe as tested. [21]

  9. Treatment as prevention - Wikipedia

    en.wikipedia.org/wiki/Treatment_as_prevention

    In August 2011, the HIV Prevention Trials Network concluded that the likelihood of transmission between the couples who were provided early antiretroviral therapy reduced by 96%. When the trial completed, the overall reduction percentage of HIV-1 transmission between couples who were treated early with ART or received the delay-ART treatment ...

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