Comparison of influenza type A and B with COVID‐19: A global systematic review and meta‐analysis on clinical, laboratory and radiographic findings

@article{Pormohammad2020ComparisonOI,
  title={Comparison of influenza type A and B with COVID‐19: A global systematic review and meta‐analysis on clinical, laboratory and radiographic findings},
  author={Ali Pormohammad and Saied Ghorbani and Alireza Khatami and Mohammad Hossein Razizadeh and Ehsan Alborzi and Mohammad Zarei and Juan Pablo Idrovo and Raymond J. Turner},
  journal={Reviews in Medical Virology},
  year={2020},
  volume={31}
}
We compared clinical symptoms, laboratory findings, radiographic signs and outcomes of COVID‐19 and influenza to identify unique features. Depending on the heterogeneity test, we used either random or fixed‐effect models to analyse the appropriateness of the pooled results. Overall, 540 articles included in this study; 75,164 cases of COVID‐19 (157 studies), 113,818 influenza type A (251 studies) and 9266 influenza type B patients (47 studies) were included. Runny nose, dyspnoea, sore throat… 
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40 Citations

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Influenza and COVID-19 have a similar picture in pediatric patients, which makes diagnostic testing necessary for adequate diagnosis and management, and the risk of death among hospitalized patients with comorbidities may be substantial, especially among infants.
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Fewer COVID-19 patients received antibiotics compared to influenza patients admitted to the two local hospitals one year earlier and the antibiotic prescription rate was lower during the second pandemic wave, possibly due to increased clinical experience and published evidence refuting the efficacy of antibiotics in treating CO VID-19 pneumonia.
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Stroke, seizure, and impaired consciousness were significantly associated with severe to critical COVID-19, whereas headache and anosmia/ageusia were frequently found in patients with mild to moderate disease.
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The review thoroughly summarises the state-of-the-art information and compares the biochemical properties of these deadly coronaviruses with the clinical characteristics, laboratory features and radiological manifestations of illnesses induced by them, with an emphasis on comparing and contrasting their similarities and differences.
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During the first wave of the pandemic, admission to hospital for COVID-19 was associated with significantly greater mortality, ICU use and hospital length of stay than influenza.
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Older patients, male patients, patients reporting fever, and patients with higher body mass indexes (BMIs) were more likely to have COVID-19 than influenza.
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The significance of COVID-19 specific symptoms for triggering RT-PCR is confirmed and additional symptom combinations with optimal trade-offs between sensitivity and specificity that maximize case capture given different resource settings are identified.
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