Vertical transmission can occur before or after birth.
Chronic infection often causes weight loss.
HIV does not survive long outside hosts.
Antibody tests help identify infection.
Handshakes and casual contact do not spread HIV.
HIV attaches mainly to CD4 receptors.
Fewer helper T cells weaken defense mechanisms.
Chronic diarrhea commonly occurs in advanced HIV infection.
HIV contains two copies of ssRNA.
HIV does not replicate in mosquitoes.
Screening prevents contaminated blood use.
Reduced immunity allows infections to develop.
AIDS results from HIV infection.
HIV relies on host cells for reproduction.
HIV causes AIDS by attacking the immune system.
HIV specifically infects and destroys helper T cells.
Loss of CD4 cells weakens immunity.
HIV can spread through infected blood.
Blood contains sufficient viral particles for transmission.
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