Which of the following statements is/are correct with reference to the Breakthrough infection?

Which of the following statements is/are correct with reference to the Breakthrough infection?

A. Breakthrough infection are infections that occur in people who have been vaccinated.

B. Phase 3 clinical trials conducted before vaccines were approved showed a fairly constant proportion of infections among those vaccinated.

C. Both A & B

D. None of these

Explanation:

Scientists at the Indian Council of Medical Research (ICMR) said the percentage of people who have been infected by the coronavirus after being vaccinated is not more than 0.04%. Breakthrough infection are infections that occur in people who have been vaccinated. Phase 3 clinical trials conducted before vaccines were approved showed a fairly constant proportion of infections among those vaccinated.