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Are you a lefty or righty when getting vaccinated? Does it matter? A new study suggest that it actually does!
Researchers in Germany found people who got all their shots in one arm had a stronger immune response than those who distributed shots between both arms, according to a study published last week in eBioMedicine, a peer-reviewed journal from The Lancet Discovery Science.
It goes on to say that the participants were randomized to receive both doses in one arm or the second dose in the opposite arm. Two weeks after receiving the shots, researchers discovered certain immune cells – commonly known as “killer T cells” – were detected in 67% of people who received both injections in the same arm versus only 43% of those who got them in different arms.
So, for some individuals- it may respond better to sequential shots in the same arm because the vaccines are targeting the same lymph nodes, making them more active in producing immune cells to fight off infections.