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The production line of Covid-19 vaccine at a workshop of the Beijing-based Sinovac Life Sciences, affiliated with Sinovac Biotech, on June 1, 2021 in Beijing, China.
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Costa Rican health authorities on Wednesday said that after studying the available clinical studies they had decided to reject the delivery of Sinovac Biotech's Covid-19 vaccine for the time being, saying it was not effective enough.

Earlier this month however, Uruguay released real-world data on the impact of Sinovac's vaccine among its population that showed it was over 90% effective in preventing intensive care admissions and deaths.

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