I havent seen any evidence covid is seasonal. it may become seasonal. but nothing in the past 2 years as indicated it is.
You're picking an outlier as proof that its not seasonal. Others may say it's the exception that proves the rule.
I just did. There are no discernable spikes coinciding with cold weather for India, Brazil, the UK or Russia.
https://en.wikipedia.org/wiki/Flu_season#Timing -> https://academic.oup.com/aje/article/165/12/1434/125289
> In the Fourier analysis, the seasonality of influenza in Brazil was characterized by a semiannual pattern, peaking in the winter month of June (amplitude = 27 percent), with a second, smaller peak during the summer (January; amplitude = 13 percent; figure 2).