Secondary Attack Rate, Transmission and Incubation Periods, and Serial Interval of SARS-CoV-2 Omicron Variant, Spain
Javier Del-Águila-Mejía, Reinhard Wallmann, Jorge Calvo, Jesús Rodríguez‐Lozano, Trinidad Valle-Madrazo, Adrián Llorente
Abstract
Contact tracing data of SARS-CoV-2 Omicron variant cases during December 2021 in Cantabria, Spain, showed increased transmission (secondary attack rate 39%) compared with Delta cases (secondary attack rate 26%), uninfluenced by vaccination status. Incubation and serial interval periods were also reduced. Half of Omicron transmissions happened before symptom onset in the index case-patient.
Topics & Concepts
Contact tracingTransmission (telecommunications)Transmission rateIncubation periodIncubationAttack rateInterval (graph theory)MedicineCoronavirus disease 2019 (COVID-19)VirologyBiologyInternal medicineOutbreakDiseaseMathematicsTelecommunicationsComputer scienceInfectious disease (medical specialty)CombinatoricsBiochemistrySARS-CoV-2 detection and testingSARS-CoV-2 and COVID-19 ResearchCOVID-19 diagnosis using AI