A woman is administered the Pfizer Covid-19 vaccine in Pamplona, northern Spain. Photo: AP
A woman is administered the Pfizer Covid-19 vaccine in Pamplona, northern Spain. Photo: AP

Coronavirus: mixing Pfizer shot and AstraZeneca safe and effective, Spanish study finds

  • Around 670 volunteers who had already received a first dose of AstraZeneca’s shot took part in the Combivacs study
  • Just 1.7 per cent of the participants reported severe side effects, which were limited to headaches, muscle pain and general malaise

A woman is administered the Pfizer Covid-19 vaccine in Pamplona, northern Spain. Photo: AP
A woman is administered the Pfizer Covid-19 vaccine in Pamplona, northern Spain. Photo: AP
READ FULL ARTICLE