MEXICO CITY, June 10 (Xinhua) -- The subvariants BA.12.1, BA.4 and BA.5 of the Omicron variant of COVID-19 are driving the fifth wave of infections in Mexico, Mexican epidemiologist Alfonso Vallejos Paras told Xinhua recently.
The expert, a member of the Department of Public Health of the Faculty of Medicine of the National Autonomous University of Mexico, said in an interview that these subvariants are mainly striking people who are not vaccinated against COVID-19.
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