OVERVIEW OF THE IMMUNE SYSTEM
IMMUNITY INNATE AND ADAPTIVE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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greater
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lesser
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Either A or B
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None of the above
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Detailed explanation-1: -All COVID-19 vaccines approved by WHO for emergency use listing have been through randomized clinical trials to test their quality, safety and efficacy. To be approved, vaccines are required to have a high efficacy rate of 50% or above. After approval, they continue to be monitored for ongoing safety and effectiveness.
Detailed explanation-2: -Overall, vaccine effectiveness against COVID-19 was around 70% to 90% in people who are immunocompromised, 66-69 compared with 84% to 94% in the general population.
Detailed explanation-3: -The study found the bivalent vaccine to be 58.7% effective against hospitalization compared to 25% for the monovalent one that preceded it; its effectiveness against infection was 61.8% compared to 24.9% for the monovalent.