The level of protection of booster doses of vaccines Pfizer and Moderna against covid-19 It decreases after four months but is still effective in avoiding hospitalizations due to omicron, according to a study published this Friday by the health authorities of U.S.
The Centers for Disease Control and Prevention (CDC, in English) concluded that the effectiveness of bracing to prevent hospital admission is 91 % during the first two months of its application, but after four months it is 78 %.
According to the study, five months after the third dose, the level of protection would drop to a 33 %, although CDC They admitted that they still do not have enough data on this group of people.
Therefore, the agency opened the door to “consider” the recommendation of other additional doses in order to maintain protection against hospitalizations.
The CDC currently recommends that everyone over 12 years of age receive a booster dose of the vaccine five months after completing their vaccination schedule in a country where only 63 % of the population has been vaccinated with both doses.
The United States is the country most affected by the coronavirus with more than 77.5 million confirmed cases since the start of the pandemic in March 2020 and more than 917,000 deaths, according to university numbers Johns Hopkins.
After breaking historical records in January, contagion levels have been declining for several weeks in the country, although deaths continue to rise, with more than 3,000 deaths daily.
Hospital admissions have fallen in the last week, although they remain high, with a daily average of 13,000. EFE
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