Vaccine Anti-body Lasts 2-3 Months
Vaccine Antibody Levels Start to Wane at Around 2–3 Months August 16th, 2021 | Author: Online Press Total antibody levels appear to start declining from as early as six weeks after complete vaccination and can reduce by more than 50% over 10 weeks, according to new data from UCL’s Virus Watch study. These findings were consistent across all groups of people regardless of age, chronic illnesses or sex. The findings, published as a research letter in The Lancet, include data from over 600 people and show antibody levels are substantially higher following two doses of the Pfizer vaccine than after two doses of the AZ vaccine. They are also much higher in those with prior SARS-CoV-2 infection. The authors highlight that although the clinical implications of waning antibody levels are not yet clear, some decline was expected and current research shows that vaccines remain effective against severe disease. For Pfizer, antibody levels reduced from a median of 7506 U/mL ...