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Continue to Chat2,000 volunteers test CanSino COVID-19 vaccine in Yucatan, Mexico https://mexicodailypost.com/2020/12/01/2000-volunteers-test-cansino-covid-19-vaccine-in-yucatan-mexico/
2,000 volunteers test CanSino COVID-19 vaccine in Yucatan, Mexico https://mexicodailypost.com/2020/12/01/2000-volunteers-test-cansino-covid-19-vaccine-in-yucatan-mexico/