Soal SMA · Konsep dasar · Kesulitan 4/5
A source states: 'The vaccine is 95% effective.' Which interpretation is most accurate?
- A.It reduces the risk of infection relative to a control group, not that 95% of people are fully immune.
- B.It guarantees 95% of people will never get the disease.
- C.It is 95% safe for all populations.
- D.It works for 95% of all virus variants.
Kunci jawaban & pembahasan
Jawaban: It reduces the risk of infection relative to a control group, not that 95% of people are fully immune.
Efficacy percentages describe relative risk reduction compared with a control group, not an absolute guarantee of immunity or safety.
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