Moderna emerged as the most effective vaccine in the market, with a vaccine effectiveness rate of 93% in a head-to-head study led by USA’s Centers for Disease Control and Prevention (CDC).
The CDC recently conducted a study of three authorized COVID-19 vaccines in the USA: Moderna, Pfizer and Jannsen of Johnson and Johnson of more than 3,600 adults.
Of the three, Moderna was found 93% effective in keeping vaccinated individuals from getting hospitalized while Pfizer came in second with 88%. Janssen comes in third with 71% protection from hospitalization.
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“Among U.S. adults without immunocompromising conditions, vaccine effectiveness against COVID-19 hospitalization during March 11- August 15, 2021, was higher for the Moderna vaccine (93%) than the Pfizer-BioNTech vaccine (88%) and the Janssen vaccine (71%),” read the report.
However, the report also assured that any of these vaccines, as well as other COVID-19 vaccine brands in general will help protect the public against the virual disease.
“Although these real-world data suggest some variation in levels of protection by the vaccine, all FDA-approved or authorized COVID-19 vaccines provide substantial protection against COVID-19 hospitalization,” it added.
The study found out that the effectiveness of the vaccine wanes after several months.
“Vaccine effectiveness for the Pfizer-BioNTech vaccine was 91% at 14 -120 days after receipt of the second vaccine dose but declined significantly to 77% at more than 120 days,” read the study.
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Both Pfizer and Moderna vaccines use genetic material called messenger RNA (MRNA) to provide doses and slightly different formulations.
The Janssen vaccine uses an inactivated common cold virus called adenovirus — a viral vector — to carry genetic instructions into the body.
