Contact Diseases 6 (HIV/AIDS) Exam
2026 Questions and Answers Graded A+
HIV/AIDS, 1981 - Correct answer-a cluster of cases of Pneumocystis pneumonia,
Kaposi's sarcoma, and loss of immune function are discovered in young
homosexual men
HIV/AIDS, 1982 - Correct answer-the term Acquired Immunodeficiency
Syndrome is used for the first time
HIV/AIDS, 1983 - Correct answer-discovery of a virus causing the loss of immune
function --> eventually named Human Immunodeficiency Virus
HIV/AIDS caused by - Correct answer-spread from monkeys in Africa to human
populations through a disease called SIV
SIV - Correct answer-Simian Immunodeficiency Virus
HIV-1 - Correct answer-related to SIV in gorillas and chimpanzees, more
pathogenic than HIV-2, 99% of cases worldwide
HIV-2 - Correct answer-endemic to West Africa, lower mortality rate than HIV-1
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, HIV/AIDS misc - Correct answer-38 million people infected worldwide; 1.7
million new infections in 2018
HIV/AIDS transmission - Correct answer-done through heterosexual transmission
HIV/AIDS predisposing factors - Correct answer-men having sex with men - 66%
heterosexuals - 24%
IV drug users - 6%
MSM and IV drug users - 3%
HIV/AIDS causative agent - Correct answer-HIV, Retroviridae Family, Retrovirus,
ss RNA virus
Retrovirus - Correct answer-enveloped, spikes, has enzymes (reverse transcriptase,
integrase, etc.)
HIV/AIDS virulence factor - Correct answer-high gene mutation rates --> rapid
antigenic variations
HIV/AIDS targets - Correct answer-CD4+ T cells
CD4+ T cells - Correct answer-a subtype of TH cells that has CD4 surface markers
HIV transmission - Correct answer-done through primary and secondary methods
primary method - Correct answer-sexual contact - exchange of body fluids
©COPYRIGHT 2026, ALL RIGHTS RESERVED 2
2026 Questions and Answers Graded A+
HIV/AIDS, 1981 - Correct answer-a cluster of cases of Pneumocystis pneumonia,
Kaposi's sarcoma, and loss of immune function are discovered in young
homosexual men
HIV/AIDS, 1982 - Correct answer-the term Acquired Immunodeficiency
Syndrome is used for the first time
HIV/AIDS, 1983 - Correct answer-discovery of a virus causing the loss of immune
function --> eventually named Human Immunodeficiency Virus
HIV/AIDS caused by - Correct answer-spread from monkeys in Africa to human
populations through a disease called SIV
SIV - Correct answer-Simian Immunodeficiency Virus
HIV-1 - Correct answer-related to SIV in gorillas and chimpanzees, more
pathogenic than HIV-2, 99% of cases worldwide
HIV-2 - Correct answer-endemic to West Africa, lower mortality rate than HIV-1
©COPYRIGHT 2026, ALL RIGHTS RESERVED 1
, HIV/AIDS misc - Correct answer-38 million people infected worldwide; 1.7
million new infections in 2018
HIV/AIDS transmission - Correct answer-done through heterosexual transmission
HIV/AIDS predisposing factors - Correct answer-men having sex with men - 66%
heterosexuals - 24%
IV drug users - 6%
MSM and IV drug users - 3%
HIV/AIDS causative agent - Correct answer-HIV, Retroviridae Family, Retrovirus,
ss RNA virus
Retrovirus - Correct answer-enveloped, spikes, has enzymes (reverse transcriptase,
integrase, etc.)
HIV/AIDS virulence factor - Correct answer-high gene mutation rates --> rapid
antigenic variations
HIV/AIDS targets - Correct answer-CD4+ T cells
CD4+ T cells - Correct answer-a subtype of TH cells that has CD4 surface markers
HIV transmission - Correct answer-done through primary and secondary methods
primary method - Correct answer-sexual contact - exchange of body fluids
©COPYRIGHT 2026, ALL RIGHTS RESERVED 2
