Both Pfizer and Moderna vaccines offer similar protection against COVID-19 and medical experts warned against comparing vaccines.
Medical News Today explains, "Vaccine efficacy is the percentage reduction in a disease in a group of people who received a vaccination in a clinical trial," and the vaccination effectiveness refers to how well a vaccine performs in the real world, outside of clinical studies.
An earlier study of the Moderna vaccine showed 94.1 percent efficacy in November. In April 2021, the Moderna vaccine showed over 90 percent efficacy of COVID-19 cases and more than 95 percent of severe issues with median follow-up after the second dose for approximately six months.
However, according to the company's report, in June 2021, the vaccine had a ''modest reduction in neutralizing titers'' against the variants as it was against the original virus.
Based on how well the vaccine prevented symptomatic COVID-19 infection seven days to six months after the second dose, the Pfizer vaccine's results announced in April 2021 showed 91.3 percent efficacy against COVID-19. It has also been 100 percent effective in preventing severe illnesses as defined in the CDC and 95.3 percent effective in preventing severe diseases as defined by the FDA.
However, according to an analysis of Israel's national health statistics, the Pfizer vaccine in late June and early July showed only 39 percent effectiveness against infection.
Sky News notes that before comparing vaccines, it is crucial to be aware that all trials use different criteria for what counts as an infection, leading to variations in results. However, all of the vaccines will reduce hospitalizations and deaths.
As far as COVID-19 is concerned, both the Moderna and Pfizer vaccines offer protection, but it is impossible to compare their efficacy due to emerging variants and criteria used for each vaccine varies, such as the number of populations, Location where trials were conducted, and time period. WHO is closely monitoring the vaccine's efficacy against the various virus strains that have been discovered. Moreover, there is also ongoing research by the vaccine manufacturers, and the final percentage of vaccine efficacy and effectiveness may differ from what has been calculated so far.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19, including symptoms, prevention, and available treatment, please refer to the World Health Organization or your national healthcare authority.