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 Content Editor ‭[3]‬

Illness comparison chart

Learn about the differences between COVID-19, influenza, common cold, and gastrointestinal illness (GI).
ON THIS PAGE:

Overview

COVID-19 Influenza Cold GI Illness
Cause SARS-CoV-2 virus Influenza A or influenza B viruses Many viruses Many viruses (Norovirus is the most common)
Symptoms appear quickly
Sometimes Yes No Yes
Immunization COVID-19 vaccine Influenza vaccine No vaccine No vaccine

Symptoms

COVID-19* Influenza Cold GI Illness
Fever
Sometimes
Common
Rare
Sometimes
Chills
Common
Common
Sometimes
Sometimes
Fatigue
Sometimes (more common in older adults)
Common
Sometimes
Sometimes
Cough
Common
Common
Common
No
Sneezing
Common
Sometimes
Common
No
Aches and pains
Common
Common
Sometimes
Sometimes
Runny and stuffy nose
Common
Common
Common
No
Sore throat
Common
Common
Common
No
Diarrhea
Common
Sometimes (especially for children)
Rare
Common
Nausea/Vomiting
Sometimes
Sometimes (especially for children)
Rare
Common
Headache
Common
Common
Rare
Sometimes
Shortness of breath
Common
Sometimes
No
No
Loss of smell or taste
Common
No
No
No

*COVID-19 symptoms are different for everyone. You may not have all of these symptoms. This is not a complete list of symptoms for COVID-19

Current as of: October 12, 2023
Sources: Provincial Immunization Program, Alberta Health Services

 Content Editor ‭[2]‬

Our work takes place on historical and contemporary Indigenous lands, including the territories of Treaty 6, Treaty 7 & Treaty 8 and the homeland of the Métis Nation of Alberta and 8 Métis Settlements. We also acknowledge the many Indigenous communities that have been forged in urban centres across Alberta.