Datasets and Codes related to article "Association between duration of SARS-CoV-2 positivity and long COVID "

This record contains raw data related to article “Association between duration of SARS-CoV-2 positivity and long COVID "

In an observational study, we analyzed 1,293 healthcare workers previously infected with SARS-CoV-2, of which 34.1% developed long COVID. Using a multivariate logistic regression model, we demonstrate that the likelihood of developing long COVID in infected individuals rises with the increasing of duration of infection and that three doses of the BNT162b2 vaccine are protective, even during the Omicron wave.

In this observational study, approved by the Institutional Review Board of Humanitas Research Hospital, we recruited 4,354 individuals working in Humanitas healthcare facilities from March 2020 to April 2022.  they completed a survey including demographics, comorbidities, vaccination status and questions about their SARS-CoV-2 history: date of infection and positivity duration; SARS-CoV-2 related symptoms at the time of infection and their duration. We defined ‘long COVID’ as the condition when at least one symptom lasted for more than 4 weeks following the first COVID-19 infection.