COVID-19 immunity in young Swedish adults investigated

Researchers at Karolinska Institutet in Sweden have analyzed the presence of SARS-CoV-2-specific antibodies and memory cells of the immune system in young adults. The results, published in The Journal of Allergy and Clinical Immunology, show that over one in four had antibodies due to the infection. Fewer of these individuals had measurable levels of memory B and T cells compared with other age groups. The researchers will now continue to study long COVID in young adults and the effects of vaccination on immunity.