journal New England Journal of Medicine Results of a comparative study of the effectiveness in preventing COVID-19 infection mRNA-1273 “Moderna” and the BNT162B2 vaccine. “Pfizer” in qatar by assessing the incidence of infection with COVID-19 after vaccination “Moderna” and vaccines “Pfizer” Needle 1 and Needle 2 during 21 Dec 2020 – 20 Oct 2021
From the study, it was found that those who received “Moderna Vaccine” Completed 2 injections, totaling 192,123 cases, totaling 878 cases, with only 3 patients with severe symptoms requiring hospitalization. But there were no severe cases or deaths. in the group of those who received “Pfizer Vaccine” Completed 2 injections, totaling 192,123 cases, totaling 1,262 cases, of which 7 were severely ill and 1 died. Infections occurring after vaccination in both groups were associated with decreased immunity over time.
The information stated that from the follow-up after receiving the second dose of vaccine for a period of 6 months, it was found that those who received the vaccine “Moderna” The cumulative number of infections was 0.59%. Among those who received the Pfizer vaccine, The cumulative number of infections after vaccination was higher, at 0.84%.
It was also found that in the vaccinated population “Moderna” likely to be infected with COVID-19 and less severe infections compared to those who received the vaccine. “Pfizer” Differences between the two vaccines began to be demonstrated three weeks after the first dose of vaccination.
However, in conclusion “Moderna Vaccine” The rate of infection after vaccination was lower compared to “Pfizer Vaccine” This is consistent with previous research showing different levels of immunity in people who received both vaccines.
source
Abu-Raddad, Laith J et al. “Effectiveness of mRNA-1273 and BNT162b2 Vaccines in Qatar.” The New England journal of medicine, 10.1056/NEJMc2117933. 19 Jan. 2022, doi:10.1056/NEJMc2117933