Karolinska Institutet Mar 26 2026 Inherited variations in antibody genes can affect how we respond to infections and vaccines, show two new studies from Karolinska Institutet in Sweden, published in the journal Immunity . The researchers have mapped immune gene variation across multiple global populations and shown how these variations affect the ability to form neutralizing antibodies, for example against the influenza virus. "We show that the genes that enable the body to form antibodies vary