A preliminary study shows that people who receive two vaccine doses from different manufacturers may experience more side effects than those who receive both doses from the same manufacturer.
The Com-Voc study was launched in the UK in February and looked at side effects from a group receiving the first dose of AstraZeneca vaccine followed by a dose of Pfizer/BioNTech vaccine, and a group receiving the first dose of Pfizer/BioNTech vaccine and a second dose of AstraZeneca vaccine.
In both cases, the doses were administered at four-week intervals, and in both cases, the participants reported more side effects, both mild and moderate, than when receiving both doses from the same vaccine manufacturer, the news agency PA reports.
The side effects were symptoms such as fatigue, headaches, and a feeling of fever and were short-lived, according to the preliminary data from the study, reported in the journal The Lancet.
There were no safety concerns about mixing the doses, the researchers point out.
This part of the study has only looked at how the patients themselves have felt after the vaccinations. It has not looked at how immunity was affected by the use of doses from different manufacturers.
Source: © NTB Scanpix / #Norway Today / #NorwayTodayNews
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