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Data on AstraZeneca vaccine and S.African variant should come soon – UK expert

Data on AstraZeneca vaccine and S.African variant should come soon – UK expert

DATA on the highly contagious COVID-19 variant identified in England do not suggest that vaccines will be less effective against it, while data on the South African variant should be available within weeks, a top British vaccines expert has said. "We have the most data on the UK variant. That doesn't suggest that it will be any less well protected against by the vaccine," said Wei Shen Lim, chair of Covid-19 Immunisation on Britain's Joint Committee on Vaccination and Immunisation. Asked specifically about the South African variant, he said that Oxford-AstraZeneca vaccine trials had been conducted in South Africa which…
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Vaccines face hurdles if shots become annual affair

Vaccines face hurdles if shots become annual affair

JOHN MILLER and LUDWIG BURGER VACCINES from AstraZeneca, Russia's Gamaleya Institute and Johnson & Johnson fight the coronavirus with another virus, leaving scientists concerned the shots may lose potency if annual inoculations become necessary to fight new variants. So-called viral vector shots - also used by several Chinese COVID-19 vaccine developers - use harmless modified viruses as vehicles, or vectors, to carry genetic information that helps the body build immunity against future infections. However, there is a risk that the body also develops immunity to the vector itself, recognising it as an intruder and trying to destroy it. Most vector-vaccine…
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