This is Indonesian data
Health workers
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Indonesia Says Sinovac's Vaccine 98% Effective to Prevent Deaths From Covid-19
Sinovac's vaccine has been 98 percent effective in reducing the number of deaths due to Covid-19 among health workers in Jakarta.jakartaglobe.id
Thank you for the data.
However, you cannot measure protection for the general population that includes elderly and all those with health conditions from a sample of health workers.
Best way to look at this is through real world data.
Let us look at graphs of deaths for both Chile and Turkey - they are the most useful as both countries have used Chinese vaccines mainly and in mass. Also they been giving them since January this year. Chile went into lockdown in March and Turkey in April to try to cope with a surge of infections and deaths.
While there is no doubt in both cases the vaccines are in fact working and preventing the majority of deaths that would have happened, there is ample evidence of the "only" 80% efficacy from death that Chile reported last month.
Yes, in the absence of any other vaccine, then best use the Chinese vaccine but do not assume that you will get near 100% protection as would happen when you take any of the approved Western vaccines on the market.
With AstraZeneca, it is not a good idea to give it to anyone under 50 as there is a small risk of blood clots and the vaccine is still being used in most of Europe in over 50s.
S Africa got spooked with a tiny trial of 2000 people where the AstraZeneca vaccine showed little effectiveness and so they went with J&J that showed over 60% effectiveness against their variant.
A large scale trial involving over 30,000 people in the US, Brazil and Chile showed AstraZeneca had 70-80% effectiveness against symptons and near 100% against death.
The UK is using AstraZeneca/Pfizer in 2:1 ratio and these are the results:
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