High Prevalence of SARS-CoV-2 Omicron Infection Despite High Seroprevalence, Sweden, 2022
Ramona Groenheit, Philip Bacchus, Ilias Galanis, Klara Sondén, Ioana Bujila, Tatiana Efimova, Fredrik Garli, Oskar Karlsson Lindsjö, Mikael Mansjö, Elin Movert, Aleksandra Pettke, Marie Rapp, Maike Sperk, Sandra Söderholm, Karin Valentin Asin, Sarah Zanetti, Maria Lind Karlberg, Andreas Bråve, Kim Blom, Jonas Klingström
Abstract
We performed 2 surveys during 2022 to estimate point prevalences of SARS-CoV-2 infection compared with overall seroprevalence in Sweden. Point prevalence was 1.4% in March and 1.5% in September. Estimated seroprevalence was >80%, including among unvaccinated children. Continued SARS-CoV-2 surveillance is necessary for detecting emerging, possibly more pathogenic variants.
Topics & Concepts
SeroprevalenceSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Coronavirus disease 2019 (COVID-19)Virology2019-20 coronavirus outbreakMedicinePrevalenceEpidemiologyImmunologyOutbreakSerologyAntibodyInternal medicineInfectious disease (medical specialty)DiseaseSARS-CoV-2 and COVID-19 ResearchSARS-CoV-2 detection and testingCOVID-19 Clinical Research Studies