Zoe app study of almost 40,000 people receiving Pfizer Covid-19 vaccine reports findings
Feedback from people who had received at least one dose of the Pfizer Covid-19 vaccine found 37% experienced some local side-effects (45% after two doses) and 14% (22% after 2nd dose) had a systemic effect (e.g. fever, aches or chills) within 7 days.
Source:
COVID Symptom Study
SPS commentary:
The MHRA has published its first report on adverse reactions to approved Covid-19 vaccines, submitted via the Yellow Card Scheme. There were 22,820 reports over the time period studied, equivalent to a rate of 3 in 1,000 doses; the majority were injection-site injections and generalised symptoms such as ‘flu-like illness’.