Journal
MICROORGANISMS
Volume 10, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms10081636
Keywords
COVID-19; in-hospital mortality; co-infections; Chlamydia pneumoniae; Mycoplasma pneumoniae
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This study aimed to explore the existence of bacterial co-infections in patients with COVID-19 and their impact on clinical manifestations. The results showed that patients with Chlamydia pneumoniae or Mycoplasma pneumoniae co-infections had worse respiratory/radiological features and higher rates of intensive care unit admissions compared to those infected with SARS-CoV-2 alone. However, the co-infection did not result in a higher mortality rate.
Background: Since 2019, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic (COVID-19) has caused millions of deaths worldwide and is the second most serious pandemic after the Spanish flu. Despite SARS-CoV-2 infection having a dominant effect on morbidity and life-threatening outcomes, the role of bacterial co-infection in patients with COVID-19 is poorly understood. The present study aimed to verify the existence of bacterial co-infections and their possible role as cofactors worsening COVID-19-related clinical manifestations. Methods: All patients with suspected SARS-CoV-infection, hospitalised in COVID-19 wards at the Sant'Anna University Hospital of Ferrara, were retrospectively included in this single-centre study and their specific bacterial serologies were assessed. Univariate and logistic regression analyses were performed. Results: A total of 1204 individual records were retrieved. Among them, 959 were excluded because of a negative nasopharyngeal swab or missing data; of the eligible 245 patients, 51 were co-infected. Compared to patients with SARS-CoV-2 infection alone, those with Chlamydia pneumoniae or Mycoplasma pneumoniae co-infections had worse respiratory/radiological features and more intensive care unit admissions. However, the co-infection did not result in a higher mortality rate. Conclusions: The present study, comparing clinical, laboratory and radiological findings between patients with COVID-19 vs. those with co-infections (C. pneumoniae or M. pneumoniae) showed that, on admission, these features were worse in co-infected patients, although the mortality rate did not differ between the two groups.
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