Covid vaccines reduce severity-symptoms, viral load in re infected people-study

Covid vaccines reduce severity-symptoms, viral load in re infected people-study

WASHINGTON. According to the extensive study published in the New England Journal Of Medicine on June 30, people who contract COVID 19 even after vaccination are likely to have a lower viral load or quantity, experience a shorter infection time, and have milder symptoms than unvaccinated individuals.

Researchers noted that while Covid 19 vaccines are proving to be highly effective in preventing infection, no vaccine is 100 percent effective, and breakthrough infections- infections after immunization-do occur.

“If you get vaccinated, about 90 percent of the time you are not going to get Covid-19 “, said Jeff Burgess, a professor at the University of Arizona Health Sciences in the US.

Researchers conducted a cohort study involving 3975 health care personnel, as first responders. The participants went through weekly Covid 19 nasal swab testing for qualitative and quantitative RT-PCR analysis from Dec 14, 2020, to April 10, 2021.

SARS- COV-2 was detected in 204 participants, of whom 5 were fully vaccinated, 11 partially vaccinated, and 156 unvaccinated. Adjusted vaccine effectiveness was 91 percent with full vaccination and 81 percent with partial vaccination.

The two-dose mRNA vaccine Pfizer -BioNTech and  Moderna came out to be highly effective in preventing symptomatic infection with severe SARS COV-2 in randomized, placebo-controlled, phase 3 efficacy trials.

Detailed study at: https://www.nejm.org/doi/full/10.1056/NEJMoa2107058

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