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Within a specific kingdom ( Plantae, Animalia, Fungi etc) the localization of viruses colonizing the host can vary: Some human viruses, for example, HIV, colonizes only the immune system, while influenza viruses on the other hand can colonize either the upper respiratory tract or the lower respiratory tract depending on the type (human ...
HIV can survive at room temperature outside the body for hours if dry (provided that initial concentrations are high), [31] and for weeks if wet (in used syringes/needles). [32] However, the amounts typically present in bodily fluids do not survive nearly as long outside the body—generally no more than a few minutes if dry. [23]
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 ...
Two types of HIV have been characterized: HIV-1 and HIV-2. HIV-1 is the virus that was initially discovered and termed both lymphadenopathy associated virus (LAV) and human T-lymphotropic virus 3 (HTLV-III). 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 ...
On a special episode (first released on September 25, 2024) of The Excerpt podcast: This year, for just the seventh time since the start of the HIV pandemic, a person was cured of the virus. That ...
The human immunodeficiency virus (HIV) [8] [9] [10] is a retrovirus [11] that attacks the immune system.It is a preventable disease. [5] There is no vaccine or cure for HIV. It can be managed with treatment and become a manageable chronic health condition. [5]
Viral shedding is the expulsion and release of virus progeny following successful reproduction during a host cell infection. Once replication has been completed and the host cell is exhausted of all resources in making viral progeny, the viruses may begin to leave the cell by several methods.
That is the good news,” Carl Schmid, executive director of the HIV+Hepatitis Policy Institute, said in an email, referring to a common HIV preventative treatment.