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UK data say first shot immunity as low as 33%

UK data say first shot immunity as low as 33%

The deputy chair of the Joint Committee on Vaccination and Immunisation (JCVI) has said it is examining data from Israel indicating that immunity after the first dose of Covid-19 vaccine could be as low as 33%, The Guardian reports.

Prof Anthony Harnden told Sky's Sophie Ridge On Sunday:

"The Israeli data is preliminary; it does involve PCR testing, which is, of course, asymptomatic cases as well as symptomatic cases. They have not followed up for more than three weeks, and the statistical methods they used are not clear. We will be looking at this in detail, but at the moment, our clear steer is the delayed second dose strategy is going to save many lives nationally."

He added that people could need an annual coronavirus shot to keep up with the virus's variations.

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