By analyzing the SARS-CoV-2 coronavirus infection rate and the severity of COVID-19 for approximately 4,000 basic workers wiped weekly, a US research team led by CDC scientists determined that Pfizer and Moderna’s mRNA vaccines reduced the risk of infection 90 percent. In the case of infectious diseases, compared with people who have not been vaccinated, there will be milder diseases and fewer viruses will be transmitted.
If there is an infection, who did it Vaccinated Against this Coronavirus SARS-CoV-2 Have one more disease Dear Compared with those who did not receive dose, It also has Viral load Low, more than half of the risk is manifested temperature And spend less days bed. When the infection protection is greater than 90%immunity Completed (14 days after the second dose) and 80% after vaccination Single dose Vaccine, consistent with the situation in clinical trials of vaccines Anti-coronavirus Approved for emergency use of messenger RNA (mRNA), community of Pfizer Biotech withmRNA-1273 of Hyundai NIAID.
These are the results of a new study conducted in the “real world” by an American research team led by scientists from the COVID-19 Response Team of the Centers for Disease Control and Prevention.CDC), he worked closely with colleagues from the University of Arizona School of Public Health, Northwestern Kaiser Permanent Health Research Center, Texas A&M University School of Medicine, University of Miami, and many other institutes.Scientists led by Professor Mark G. Thompson are analyzing Infection rate And intensity Coronavirus disease In the case of about 4000 people infected Basic worker -As health workers and first responders, both participated in CDC’s HEROES-RECOVER research project.
Participants accept once a week Nasal swab (Self harvest) From December 13, 2020 to April 10, 2021, in eight different locations in the United States for 17 consecutive weeks. Laboratory tests on biological samples detected SARS-CoV-2 coronavirus in 204 participants (1% on the 5th), of which 16 were partially or fully vaccinated, 156 were not vaccinated, and 32 It is in an “undetermined” state and therefore excluded from the investigation. By comparing all the data, it was found that the risk of infection was reduced by 91% for people who received two doses of the vaccine, and the risk of infection was reduced by 80% for people who received only one dose of the vaccine.
Among the 16 infected people who were partially or fully vaccinated, the viral load detected in the laboratory was found to be lower than 40% Compared with unvaccinated people; vaccinated people are also 58% less likely to have a fever and spend an average of two days in bed. “The long-term results of this study add to other evidence that the mRNA vaccine against COVID-19 is effective and should prevent most infections, and that fully vaccinated infected people may develop lighter and shorter illnesses. And it seems unlikely to spread the virus to others. These benefits are another important reason for vaccination,” he said in a statement. Press release CDC Director Rochelle P. Walensky added that vaccines are a key tool to overcome the pandemic. Research detailsBNT162b2 and mRNA-1273 vaccines prevent and attenuate COVID-19“published in Centers for Disease Control and Prevention Portal And in the MedrXiv online database.