this post was submitted on 28 Aug 2024
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"Health Canada is reviewing submissions from Pfizer and Moderna for COVID-19 vaccines that target the KP.2 strain," a spokesperson said on Tuesday.
So it's KP.2 based. I like there's acknowledgement that COVID isn't seasonal and there are regular peaks throughout the year including during the summer.
I was of the understanding that the seasonality we had observed was somewhat influenced by people's activity patterns. In the colder months people tend to spend more time concentrated indoors with other people (allowing communicable diseases to spread easier), compared to people being more spread out and more often outdoors in the warmer months.
It is. But in addition flu's transmission is affected significantly by air conditions and the speed with which it mutates. SARS-CoV-2 mutates faster and it transmits during the summer air conditions just as well as the winter. In effect we get COVID waves every time there's a new variant that evades the immunity acquired from from the previous variant. That seems to happen every couple of months or so. Spending time indoors still makes things worse so the peaks are typically higher during the winter months. And of course the holiday season is a massive superspreader event.
Influenza spreads better in the winter, but Covid seams to peak twice through the year, once in summer and again in winter. The best way to track it is through wastewater surveillance. This is the US tracking dashboard, not sure if Canada has something similar. https://www.cdc.gov/nwss/index.html