Question

what are the disadvantage of Corona vaccine​

Answer 1

Explanation:

An interim analysis of the phase 3 ENSEMBLE trial showed that a single dose of the COVID-19 vaccine candidate being developed by Janssen Pharmaceutical Companies was 72% effective in the United States, but showed lower efficacy in other countries, especially those with higher rates of SARS-CoV-2 virus variants.

Answer 2

An interim analysis of the phase 3 ENSEMBLE trial showed that a single dose of the COVID-19 vaccine candidate being developed by Janssen Pharmaceutical Companies was 72% effective in the United States, but showed lower efficacy in other countries, especially those with higher rates of SARS-CoV-2 virus variants.