A Chilean study said Sinovac Biotech Ltd.’s vaccine is 67 per cent effective in preventing symptomatic Covid-19 infections and wards off 80 per cent of fatalities from the disease.This is the first such evidence showing how well the Chinese shot can protect against Covid-19 after it’s been widely used in a population.The report also said that the Sinovac vaccine was 85 per cent effective against hospitalisation and 89 per cent in preventing people from entering intensive care units.The Chilean…


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