CAIE IGCSE Biology 16.6.4 Transmission of HIV

Practise distinguishing HIV transmission through infected body fluids from contact routes that do not transmit the virus.

Exam points

identify unprotected sexual contact and infected blood as transmission routes
link shared needles and contaminated instruments to direct blood transfer
distinguish saliva and ordinary social contact from recognised HIV transmission routes

[Maximum number: 2]

Pregnancy can occur after the fusion of a male gamete and a female gamete.

Drug X can be injected into the body. This is one way that HIV can be transmitted. Describe two other ways that HIV can be transmitted.

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