Time for a bold take. There won’t be a fourth COVID wave!
We’re exiting the third wave in South Africa, and (depending on how you count) globally too. Most people seem to be expecting another wave in Dec/Jan. I think there’s at least a 50% chance it won’t happen. (Yeah, that’s only 50%, but higher than many people are guessing).
Why? Because waves are driven by variants. Another wave would need a variant that is substantially more infectious than Delta, and/or evades immunity, and/or there is a massive decline in vaccine effectiveness. Some of those happened with Beta, and then Delta, but there’s no sign yet of a similar variant (early days I know). Historically, though, respiratory pandemics (eg 1918 flu) have 1-2 serious variants and that’s it. Plus, the hurdle for a successful breakout variant grows with every vaccination performed.
So it’sm far from certain but let’s put a stake in the ground 🙂
PS. Get vaccinated. COVID can kill outside waves, and we need to keep that hurdle climbing else a fourth wave is much more likely.