The Northern Sweden Maternity cohort, at the University Hospital in Umeå, Sweden, was established in 1975. The purpose was originally research on systemic infections.
The participants are pregnant women from Västerbotten. These women have attended a maternity healthcare clinic in the region during the first trimester of pregnancy.
Blood samples (serum) are drawn and are shipped to Umeå University Hospital, where they are analysed for systemic infections and then stored at -20° C. The cohort contains over 161,000 serum samples from 113,000 pregnant women (February 2025).
