"Pfizer-Modena vaccine, 80% preventive effect just by the first vaccination"

A single dose of Pfizer's and Modena's COVID-19 vaccine has been shown to be 80% effective.

The U.S. Centers for Disease Control and Prevention observed that 3,950 people working in medical institutions from December 14th to 13th of last year showed that the prevention effect was about 80% when they received only the first vaccination, according to the'Weekly Report on Disease Outbreak and Death'. Announced.

When the second vaccination was completed, the prevention effect jumped to 90%.

Earlier, Pfizer said that its vaccines are effective in preventing infections by 95% and Modena at 94.1%.