New efficacy data from Brazil on Sinovac's Covid-19 vaccine, for which there are now four widely different success rates, raised more questions than answers, as many developing countries pin their hopes on the CoronaVac to end the pandemic.
Here are potential factors contributing to CoronaVac's varying efficacy rates and expert interpretations...
Because “Made in China”
Why must take china vaccine? They released the virus, covered it up and lied about it. Their own people don't even want to take china baby formula and vaccine for kids. What tv brand you want to buy? Korea or china? Tv also don't want china, why vaccine?
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