Early study suggests our genes may play a part in how well protected we are after Covid jabs.
Researchers analysed blood samples from people who took part in five different trials, including 1,600 adults who had either the Oxford-AstraZeneca or Pfizer-BioNTech vaccine as their first jab.
The study also followed a group of people who had weekly Covid tests for more than a year after their first jab. Scientists acknowledge many other factors contribute to the risk of getting Covid, including age, other illnesses and people's occupations.Dr Alexander Mentzer, NIHR academic clinical lecturer at the Wellcome Centre for Human Genetics and a lead researcher on the study, said: "We have seen a wide variation in how quickly people test positive for Covid-19 after vaccination.
"We found that inheriting a specific variant of an HLA gene was associated with higher antibody responses, but this is only the start of the story.
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