Moderna COVID-19 vaccine over 90% effective 6 months after booster shot, data shows – National

Moderna says its COVID-19 vaccine is more than 90 per cent effective against the virus at least six months after receiving a second dose.

Referencing data released Tuesday from its Phase III clinical trial, the pharmaceutical giant said in a press release its vaccine was up to 95 per cent effective against “severe cases of COVID-19.”

Moderna also said its vaccine booster geared towards variants of concern showed an increase in “neutralizing titres” against known strains of the virus. A titre is laboratory test that measures the presence and amount of antibodies in blood.

“The new preclinical data on our variant-specific vaccine candidates give us confidence that we can proactively address emerging variants,” the press release said.

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The mRNA vaccine developer said the vaccine’s efficacy kicked in two weeks after the second dose. Data from the Phase III clinical trial evaluated over 900 cases of COVID-19 until April 9, including more than 100 severe cases of the virus.

The news comes after a study published in the New England Journal of Medicine on April 6 found antibodies produced by Moderna’s vaccine maintained a 94 per cent efficacy rate that began 180 days after the second dose.

Health Canada approved the two-dose Moderna vaccine in December of last year.

Canada has pre-ordered 44 million doses of the vaccine and has already distributed more than 2 million doses across the country.

More to come. 

© 2021 Global News, a division of Corus Entertainment Inc.

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