Background: Correlation between coronavirus disease 2019 (COVID-19) and superinfections has been investigated, but remains to be fully assessed. This multi-centre study reports the impact of the pandemic on bloodstream infections (BSIs). Methods: This study included all patients with BSIs admitted to four Italian hospitals between 1 January and 30 June 2020. Clinical, demographic and microbiologic data were compared with data for patients hospitalized during the same period in 2019. Results: Among 26,012 patients admitted between 1 January and 30 June 2020, 1182 had COVID-19. Among the patients with COVID-19, 107 BSIs were observed, with an incidence rate of 8.19 episodes per 1000 patient-days. The incidence of BSI was significantly higher in these patients compared with patients without COVID-19 (2.72/1000 patient-days) and patients admitted in 2019 (2.76/1000 patient-days). In comparison with patients without COVID-19, BSI onset in patients with COVID-19 was delayed during the course of hospitalization (16.0 vs 5 days, respectively). Thirty-day mortality among patients with COVID-19 was 40.2%, which was significantly higher compared with patients without COVID-19 (23.7%). BSIs in patients with COVID-19 were frequently caused by multi-drug-resistant pathogens, which were often centre-dependent. Conclusions: BSIs are a common secondary infection in patients with COVID-19, characterized by increased risk during hospitalization and potentially burdened with high mortality.
Bloodstream infections in the COVID-19 era: results from an Italian multi-centre study / Pasquini, Z.; Barocci, I.; Brescini, L.; Candelaresi, B.; Castelletti, S.; Iencinella, V.; Mazzanti, S.; Procaccini, G.; Orsetti, E.; Pallotta, F.; Amadio, G.; Giacometti, A.; Tavio, M.; Barchiesi, F.. - In: INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES. - ISSN 1201-9712. - 111:(2021), pp. 31-36. [10.1016/j.ijid.2021.07.065]