Pre-existing health conditions and severe COVID-19 outcomes: an umbrella review approach and meta-analysis of global evidence.
Marina Treskova-SchwarzbachLaura HaasSarah RedaAntonia PilicAnna BorodovaKasra KarimiJudith KochTeresa NygrenStefan ScholzViktoria SchönfeldSabine Vygen-BonnetOle WichmannThomas HarderPublished in: BMC medicine (2021)
Risk of undesirable COVID-19 health outcomes is consistently increased in certain patient subgroups across geographical regions, showing high variability in others. The results can be used to inform COVID-19 vaccine prioritisation or other intervention strategies.