Tag Archives: booster

Covid XBB.1.5 (the Kraken Wakes*)

Posted on February 16, 2023 by colinmathers

A new and highly transmissible subvariant of the Omicron Covid18 variant, XBB.1.5, also nicknamed the Kraken, was first identified in the USA in late October 2022. At the beginning of December, Omicron sub variant XBB.1.5 made up just 1.3 per … Continue reading →

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Is the Covid-19 bivalent booster worthwhile?

Posted on February 3, 2023 by colinmathers

Omicron and subvariants have become the dominant form of Covid-19 circulating in most parts of the world. So-called bivalent mRNA vaccines became available from both Pfizer and Moderna in August or September 2022. Intended for booster vaccination, they contain mRNA … Continue reading →

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Covid-19 booster shots and the Delta variant

Posted on November 21, 2021 by colinmathers

Switzerland is now offering a Covid-19 booster shot to to the 65+ and at-risk who has had their two Covid-19 vaccinations at least six months ago. It may soon be extended to all adults. I had my third shot last … Continue reading →

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