HIV, human immunodeficiency virus, is the causative agent of AIDS. Which of the following statements is false?
A) HIV mutates rapidly in infected individuals.
B) HIV is amenable to phylogenetic analysis.
C) HIV was transmitted to humans from a simian source just once.
D) HIV has spread rapidly in humans worldwide.
E) HIV may be transferred from one human to another by blood transfusions.

Question

Quizplus · Accepted Answer

HIV is believed to have crossed the species barrier from simian primates to humans at least twice, with the two strains of HIV known as HIV-1 and HIV-2.

HIV, Human Immunodeficiency Virus, Is the Causative Agent of AIDS