It comes as new data suggests people who have received the Pfizer jab have fewer antibodies targeting the Delta variant compared to other strains. The research, from the Francis Crick Institute and the National Institute for Health Research (NIHR) UCLH Biomedical Research Centre, supports reducing the gap between first and second doses.The data found that after just one dose of the Pfizer jab, recipients were less likely to develop antibody levels against the Delta variant, also known as the Indian strain, compared to those seen against the UK variant, now known as Alpha.

https://www.express.co.uk/news/uk/1445755/delta-variant-covid-vaccine-news-bbc-newsnight-cases-deaths-uk-latest-ont

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