BI-302
Vaccines
Biology · Secondary 3 · Medium · Vaccines
Which statement explains why widespread vaccination against a viral disease helps to reduce its spread in a population?
- Vaccination kills all viruses present in the air.
- Vaccination makes people immune so the virus has fewer people to infect.
- Vaccination cures people who are already infected with the virus.
- Vaccination makes the virus weaker so it cannot reproduce in any host.
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