Study in the UK – Real Pundit


Antibody levels produced by two doses of Oxford / AstraZeneca or Pfizer / BioNTech coronavirus vaccine may begin to fall six weeks after the second jab, and for some may drop as much as 50 percent within three months. , research suggests.

The University College London (UCL) Virus Watch study analyzed blood from 552 vaccinated people mostly aged 50 and 60.

Antibody levels varied between patients, but a double dose of Pfizer / BioNTech produced more antibodies against the virus than two Oxford jabs.

For the Pfizer vaccine, the antibody level dropped from an average of 7,506 units per milliliter (ml) in 21-41 days, to 3,320 units per ml in 70 or more days.

For the Oxford jab, they dropped from 1,201 units per ml in 0–20 days to 190 units per ml in 70 or more days.

The findings are published in the results of a research letter to Lancet.

The letter said it could be “significant if antibody levels in some groups fell below (not yet determined) levels of protection than in others” because higher antibody levels ”are likely to have in relation to greater protection against species, ”but it is also said that T- cell responses may“ compensate to some extent as antibody responses decrease. ” – READ MORE

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