In the United States, experts assure that when the number of vaccinated adults exceeds 60%, the cases of covid-19 will begin to collapse.
Dr. Jonathan Reiner, a professor of medicine at George Washington University, said the number of infections and deaths will begin to drop dramatically in May.
However, Dr. Anthony Fauci believes that it takes at least 70% of the population to be immunized to achieve a "protective blanket."