Earlier quoted context omitted.
Do they even have usable vaccines? Their Sinovac/Sinopharm vaccines were reasonably effective in preventing severe COVID in the non-elderly pre-omicron, but they don't seem to be too effective against omicron. Most countries using the Chinese vaccines had the "benefit" of having a ton of natural immunity as well. China obviously does not have this. They might seriously have to consider importing Western vaccines as b…
Data from Hong Kong shows that three shots of Sinovac is still 98% effective against severe outcomes with Omicron: https://fortune.com/2022/03/22/china-covid-vaccine-data-reop... And it doesn't make a lot of sense that the different vaccines would be substantially different against different variants or would wane quicker once the same level of vaccination was reached. Once you've got the T-cells and B-cells they're…
Not quite. Subunit (Novavax) or inactivated virus vaccines (like the Chinese ones) do not cause synthesis of viral proteins, so they do not stimulate killer T cell immunity [1]. That's a whole arm of the immune system which is not getting primed.
[1] Except to a limited extent via cross-presentation, i know