Gagandeep Kang (File photo)
An Israeli study rang alarm bells when it suggested that those vaccinated might be eight times as susceptible to the South Africa variant of Covid-19 as those not vaccinated. Leading virologist Dr Gagandeep Kang during an interaction with TOI explains why the implications are not as dire as they sound.
Are the findings of the Israeli study as bad as they sound? If not why not?
The study took people who were infected after vaccination (either full immunization with two doses or partly immunized, from the time the first dose is expected to kick in to until the second dose kicks in, that is from two weeks after first dose until one week after second dose) and matched them to unvaccinated people with infection. Most infections were due to B.1.1.7 (UK variant) and there was some reduced effectiveness in the partially immunized, but there were a small number with B1.351 (South Africa variant), with eight cases in fully vaccinated individuals and one in unvac
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