Vehicles pass through the tolls at the Golden Gate Bridge in San Francisco, Calif., on Monday, February 24, 2014. Tolls may rise by $1 in April and another $1 over the next four years. Motorists heading to S.F. cross the Golden Gate Bridge, whose sign is reflected in a window.
It is hard to believe but HIV is actually a very fragile organism. If HIV is outside the body, its capsid disintegrates very quickly which instantly 'disarms' the virus. That is why infection is virtually impossible without direct blood-to-blood contact or through the mixing of body fluids containing the virus.his DNA then becomes part of the infected cell's genetic material. HIV is a 'slow' type of virus that falls into the category of lentiviruses. Lentiviruses are called slow viruses because they take a long time to cause damage to the body. See image 1.
Since the 1980s, there has been a lot of debate around the origin of HIV. So where did HIV and AIDS come from? Here we discuss evidence about the origin of HIV, and find out how, when and where HIV first began to cause illness in humans. There are two types of HIV, known as HIV-1 and HIV-2, which have different origins and causes. HIV is a type of lentivirus, which means it attacks the immune system.