MCQOPTIONS
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| 1. |
According to data from U.S Centers for Disease Control and Prevention study, Covid-19 vaccines from Pfizer Inc. and Moderna Inc. provide as much as how much percent protection against infection? |
| A. | 75 |
| B. | 80 |
| C. | 85 |
| D. | 90 |
| E. | 95 |
| Answer» E. 95 | |