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This study investigates the safety of mixing COVID-19 vaccines for booster doses in Hanoi, Vietnam, involving 719 participants. It found that 45.76% experienced at least one mild adverse event, with local effects like pain at the injection site being the most common. The results suggest that mixing vaccines is generally safe and could address vaccine shortages, although further research is needed to explore immunity and adverse effects in larger cohorts.

Author

Valentina Quintero

Language

EN