Day 11 – Q 4. What do you understand by the ‘efficacy’ of a vaccine? How is it measured? Explain.
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4. What do you understand by the ‘efficacy’ of a vaccine? How is it measured? Explain.
टीके की ‘प्रभावकारिता‘ से आप क्या समझते हैं? यह कैसे मापा जाता है? स्पष्ट कीजिए।
