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Tags: Coronavirus | Health Topics | Vaccines | Moderna | Pfizer | J&J | COVID

Moderna COVID Vaccine Edges Pfizer in New Research

vial of moderna COVID vaccine
(Dreamstime)

Friday, 17 September 2021 01:22 PM

A new study released by the US Centers for Disease Control and Prevention (CDC) on Friday is the latest to suggest the Moderna COVID vaccine confers better long-term protection against hospitalization than Pfizer.

CDC researchers conducted an analysis of nearly 3,689 adults who were hospitalized with severe COVID from March 11 to August 15, 2021 — a period that precedes and includes the dominance of the Delta variant.

Overall, 12.9% were fully vaccinated with the Moderna vaccine, 20.0% were vaccinated with Pfizer-BioNTech, and 3.1% were vaccinated with Johnson & Johnson.

Over the entire period, the Moderna vaccine was 93% effective against hospitalization, Pfizer was 88% effective, and J&J was 68% effective.

The loss of efficacy against hospitalization for Pfizer was particularly pronounced: it fell from 91% in 14-120 days after vaccination to 77% more than 120 days after vaccination.

By contrast, Moderna fell from 93% to 92% when comparing the same two periods.

The study also included a separate analysis of the levels of different types of antibodies provoked by the vaccines, taken from 100 volunteers.

The Moderna vaccine elicited higher levels of antibodies compared to Pfizer and J&J for a key part of the virus' spike protein, which it uses to invade cells.

There is accumulating research suggesting the Moderna vaccine's superiority over the Pfizer vaccine, including a previous CDC studies released last week.

The reasons aren't fully clear, but it could be because the dosage levels are higher — 100 micrograms against 30.

It could also be tied to the dosing interval, with the Pfizer shots given three weeks apart versus Moderna, which are given four weeks apart.

The Food and Drug Administration was holding a meeting of leading independent experts on Friday to weigh the question of giving third doses of Pfizer to the general population, not just immune compromised people.

© AFP 2021


Health-News
A new study released by the US Centers for Disease Control and Prevention (CDC) on Friday is the latest to suggest the Moderna COVID vaccine confers better long-term protection against hospitalization than Pfizer. CDC researchers conducted an analysis of nearly 3,689 adults...
Moderna, Pfizer, J&J, COVID, vaccine
302
2021-22-17
Friday, 17 September 2021 01:22 PM
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