The dose of the MRNA vaccine booster significantly reduces the risk of being infected with the Delta variant or Omicron Covid-19, according to scientists at the center of Mount Rocky for employment and environmental health (RMCoeh), program partnerships between Utah University and the State University of Weber.The researchers found that booster shots, or third dose, more than 90% were effective against Delta variants and 60% against Omicron. In comparison, a two-dose regimen was only 65% effective against Delta and 46% against Omicron.
Their study appeared at the New England Journal of Medicine.This study evaluated Covid-19 infection between the end of August, 2021 and January, 2022 among 3,975 health care personnel, first respondents and other frontline workers in six countries who had received the MRNA vaccine shot booster. Workers have received three doses of one manufacturer – modern or pfizer-bionech – or a combination of two vaccines.
After 17 weeks, the researchers found that among health care workers with SARS-COV-2 infection, the virus RNA burden averaged 40% lower in part or fully vaccinated participants than unavusted participants. In addition, the risk of fever is 58% lower, and the duration of a shorter disease, with fewer 2.3 days spent on the bed.Based on these findings, the researchers concluded that the MRNA vaccine continued to provide strong protection against severe results.
“These results indicate that in the study of real-world workers, the vaccine continues to be effective against the omicron variant of the virus, even at the level of efficacy reduced compared to the previous Delta variant,” Yoon said.Overall, this result confirmed that the MRNA vaccine is not only very effective in preventing SARS-COV-2 infection, but it can also reduce the effects of breakthrough infections. This finding is very important for essential officers and forefront, given their potential to transmit viruses through close contact with patients, coworkers, and public, the researchers concluded.
“Researchers around the world have stepped over the past two years to overcome this crisis,” Yoon said. “We are happy to have played a role in helping the world understand the disease and the ability of vaccines to protect against it.”Future studies will check the effectiveness of the second booster shot, or the fourth dose of the MRNA vaccine.