Mixing COVID-19 vaccine doses leads to more reactions, study finds, which may be ‘first sign of success’ – CBC

‘We don’t know yet’ whether early finding ties to improved immune response, U.K. researcher says

May 12, 2021

Mixing different types of COVID-19 vaccines for two doses can hike the chance of someone having mild or moderate reactions like fatigue, headache or a fever, according to early results from a U.K. study, which is being watched closely by health officials in Canada and beyond.

The findings were published Wednesday as correspondence, not as a full study, in The Lancet — a peer-reviewed medical journal — and came from the Oxford Vaccine Group’s Com-Cov vaccine trial, which is studying the use of different combinations of approved COVID-19 vaccines for first and second doses.

Read more: https://www.cbc.ca/news/health/vaccines-mixing-doses-1.6023830

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