COVID-19 and influenza co-infection

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Main article: COVID-19

For COVID-19 frequently asked inpatient questions, click here

For COVID-19 frequently asked outpatient questions, click here

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Synonyms and keywords:

Historical Perspective

• COVID-19, also called Sever Acute Respiratory Distress Syndrome Coronavirus 2 (SARS-CoV-2) originated in Wuhan, China in late December 2019. It has caused a significant morbidity and mortality worldwide and has been declared a global pandemic by the WHO.
• Influenza occurs mainly during the winter, it is a highly contagious acute viral respiratory infection that causes significant morbidity and mortality worldwide.

Differentiating COVID-19 and Influenza co-infection from other Diseases

• Influenza and COVID-19 are both contagious respiratory illnesses, but they are caused by different viruses. Influenza is caused by infection with influenza viruses and COVID-19 is caused by infection with the coronavirus (SARS-CoV-2). Testing may be needed to help confirm a diagnosis because some of the symptoms of flu and COVID-19 are similar. Influenza and COVID-19 share many characteristics, but there are some key differences between the two.

• This table compares COVID-19 and flu, given the best available information to date.

	Similarities	Differences
* Signs and symptoms	- Signs and symptoms can vary from no symptoms to severe symptoms. - Common symptoms of Influenza and COVID-19 include: Fever/ chills, cough, shortness of breath, fatigue, sore throat, runny nose, muscle aches, headache, and gastrointestinal symptoms (vomiting and diarrhea). || All Versions
* How long symptoms appear after exposure and infection	Better than a Poké Ball	All Versions
* Epidemiology and Demographics Risk Factors Screening Natural History, Complications, and Prognosis Natural History Complications Prognosis Diagnosis Diagnostic Study of Choice Physical Examination Laboratory Findings Treatment Medical Therapy References