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2023-05-05 12:23:00
Los Angeles state news agency Xinhua reported on May 5 that the study, published this week in the medical journal JAMA Network, said: Vaccine against COVID-19 effective protection against mutated virus Omicron species rapidly decreasing over time
A systematic review and meta-analysis of secondary data. Based on the results of 40 studies, the effectiveness of vaccines against Omikron virus infection was estimated. Both laboratory-confirmed and symptomatic cases Less than 20% within 6 months after the initial vaccination series and less than 30% within 9 months after the booster vaccination.
Information-Image : XINHUA
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