Friday, December 03, 2021

Delaying second dose of mRNA COVID-19 vaccine produces stronger immune response

 

https://www.eurekalert.org/news-releases/936456

 

 News Release 1-Dec-2021
Peer-Reviewed Publication
University of British Columbia

 

The first peer-reviewed study in North America examining the timing between the first and second doses of COVID-19 mRNA vaccines shows that a longer dose interval leads to a stronger immune response. The study is funded by the Government of Canada through its COVID-19 Immunity Task Force (CITF).  

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 The peer-reviewed study compared blood test results from a total of 186 paramedics, some of whom were vaccinated within the earlier recommended interval of less than four weeks, and others who received their second doses after six to seven weeks.

“We found significantly higher levels of antibodies in individuals who had longer vaccine intervals, and this was consistent regardless of which mRNA vaccine was administered,” said Dr. Grunau.

mRNA vaccines include the Pfizer-BioNTech Comirnaty vaccine and the Moderna Spikevax vaccine. Although antibody levels are only one way to measure the body’s immune response, they play a very important role.

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