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Medical Science Monitor Basic Research
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eISSN: 1643-3750

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A Retrospective Study of Coinfection of SARS-CoV-2 and Streptococcus pneumoniae in 11 Hospitalized Patients with Severe COVID-19 Pneumonia at a Single Center

Guillermo Rodriguez-Nava, Maria Adriana Yanez-Bello, Daniela Patricia Trelles-Garcia, Chul Won Chung, Goar Egoryan, Harvey J. Friedman

(Department of Internal Medicine, AMITA Health Saint Francis Hospital, Evanston, IL, USA)

Med Sci Monit 2020; 26:e928754

DOI: 10.12659/MSM.928754


BACKGROUND: A lethal synergism between the influenza virus and Streptococcus pneumoniae has been identified. However, bacterial coinfection is considered relatively infrequent in hospitalized patients with COVID-19, and the co-prevalence of Streptococcus pneumoniae is low.
MATERIAL AND METHODS: We retrospectively analyzed the clinical characteristics and outcomes of patients subsequently admitted to AMITA Health Saint Francis Hospital between March 1 and June 30, 2020, with documented SARS-CoV-2 and S. pneumoniae coinfection.
RESULTS: We identified 11 patients with S. pneumoniae coinfection. The median age was 77 years (interquartile range [IQR], 74-82 years), 45.5% (5/11) were males, 54.5% (6/11) were white, and 90.9% (10/11) were long-term care facility (LTCF) residents. The median length of stay was 7 days (IQR, 6-8 days). Among 11 patients, 4 were discharged in stable condition and 7 had died, resulting in an inpatient mortality rate of 64%.
CONCLUSIONS: At our center, 11 patients with COVID-19 pneumonia who had confirmed infection with SARS-CoV-2 were diagnosed with Streptococcus pneumoniae infection while in hospital. All patients had pneumonia confirmed on imaging and a nonspecific increase in markers of inflammation. The in-hospital mortality rate of 64% (7 patients) was higher in this group than in previous reports. This study highlights the importance of monitoring bacterial coinfection in patients with viral lung infection due to SARS-CoV-2.

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