Figures and Tables:
Figure 1. PRISMA diagram for selection of studies.
Figure 2. Comparison of risk for need or use of supplemental oxygen between SARS-CoV-2 co-infection with influenza and SARS-CoV-2 mono-infection. N-the total number of SARS-CoV-2 coinfected and mono-infected patients; QA-the score of quality assessment.
Figure 3. Comparison of risk for mechanical ventilation between SARS-CoV-2 co-infection with influenza and SARS-CoV-2 mono-infection. N-the total number of SARS-CoV-2 coinfected and mono-infected patients; QA-the score of quality assessment.
Figure 4. Comparison of risk for ICU admission between SARS-CoV-2 mono-infection and A) SARS-CoV-2 co-infection with influenza, B) SARS-CoV-2 co-infection with influenza A virus. N-the total number of SARS-CoV-2 coinfected and mono-infected patients; QA-the score of quality assessment.
Figure 5. Comparison of risk for death between SARS-CoV-2 mono-infection and A) SARS-CoV-2 co-infection with influenza, B) SARS-CoV-2 co-infection with influenza A virus, C) SARS-CoV-2 co-infection with influenza B virus, D) SARS-CoV-2 co-infection with RSV. N-the total number of SARS-CoV-2 coinfected and mono-infected patients; QA-the score of quality assessment.
Table 1. Characteristics of included studies.
ER = emergency room; IP = inpatient; OP = outpatient; NPS=Nasopharyngeal swab; OPS=Oropharyngeal swab; BLF=Bronchoalveolar lavage fluid; BAF=bronchial aspiration fluid; NPS=nasopharyngeal aspirate; NA= not available; RT-PCR = Reverse transcription polymerase chain reaction; DFA = direct immunofluorescence assay; IFA = indirect immunofluorescence assay; CL = chemiluminescence; CIA = chromatographic immunoassay; Number of subjects = the total number of SARS-CoV-2 coinfected with influenza/RSV and mono-infected patients; O2=oxygen; MV= mechanical ventilation; ICU = intensive care unit; IQR = interquartile range; SD = standard deviation; y=years; m=month.