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The Pfizer/BioNTech vaccine generates a robust immune response in 99% of people after one dose, new research suggests. One dose of the vaccine protects against severe disease and after two jabs ...
The measles, mumps and rubella (MMR) vaccine is 93% effective against measles after one dose and 97% effective against measles after two, according to the CDC.
Among the over-80s, Covid testing data on more than 12,000 people found at least 57% protection against coronavirus 28 days after vaccination with a single dose of Pfizer, rising to 88% after a ...
One way is to measure the level of antibodies specific against a disease a few years after the primary dose is given. Anamnestic response, the rapid production of antibodies after a stimulus of an antigen, is a typical way to measure the need for a booster dose of a certain vaccine. If the anamnestic response is high after receiving a primary ...
In the UK, 15,121 health care workers from 104 hospitals who had tested negative for antibodies prior to the study, were followed by RT-PCR tests twice a week from 7 December 2020 to 5 February 2021, a study compared the positive results for the 90.7% vaccinated share of their cohort with the 9.3% unvaccinated share, and found that the Pfizer ...
In January 2021, Janssen announced that 28 days after a completed vaccination, the vaccine was 66% effective in a one-dose regimen in preventing symptomatic COVID‑19, with an 85% efficacy in preventing severe COVID‑19 [33] [34] [35] and 100% efficacy in preventing hospitalization or death caused by the disease.
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