Mixing Pfizer and Moderna vaccines gives a better immune system response against COVID-19, study finds

The study, which was conducted by researchers at Oxford University, examined the immune system responses of 1,070 subjects who took some combination of the Oxford-AstraZeneca, Pfizer-BioNTech, Novavax, and Moderna vaccines. 

Individuals who took AstraZeneca followed by Moderna or Novavax also produced higher antibodies and T-cell responses than those who took two doses of AstraZeneca. 

In this Oct. 5, 2021, file photo a healthcare worker fills a syringe with the Pfizer COVID-19 vaccine at Jackson Memorial Hospital in Miami. (AP Photo/Lynne Sladky, File)

In this Oct. 5, 2021, file photo a healthcare worker fills a syringe with the Pfizer COVID-19 vaccine at Jackson Memorial Hospital in Miami. (AP Photo/Lynne Sladky, File)

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