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Namaste's avatar

It’s not the vaccine! It’s pre-existing immunity

https://pubmed.ncbi.nlm.nih.gov/36328937/

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Moro Balakrishnan's avatar

Herd immunity from the surge. With fast spreading Omicron, acquiring population level herd immunity was also quick. No contamination of this herd immunity from the past. Population had no exposure to previous variants (closed society) and the vaccine effects would long have disappeared when Omicron struck them. Fresh vaccinations simply could not keep up. So, the surge disappeared as quickly as it came. Scientifically, this is evidence that natural immunity from exposure is the best. Somewhat cynically one could say that this is the upside of zero covid policy, but in human and economic terms, this must have cost country a bomb. Not an approach for the future, but there is a lesson of science (epidemiological) to be learnt. Like Sweden, allow the infection to spread. But unlike Sweden, focus on the sick and infected with early treatments, based on related diseases and symptoms. In less than an year, the virus could have been bottled up. Like the West, China too ignored early classical treatments. It may have contained Omicron quickly, but not without the cost of immense human suffering.

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