Symptoms range from mild (like the flu and other common respiratory infections) to severe. Common symptoms of COVID-19 are listed below. These symptoms are subject to change. Please visit the Ontario Ministry of Health website for latest information(external PDF).
The most common symptoms of COVID-19 that require immediate self-isolation and COVID-19 testing include:
- Fever and/or chills (temperature of 37.8°C/100°F or higher)
- Cough or barking cough (croup)
- Shortness of breath (out of breath, unable to breathe deeply)
- Decrease or loss of taste or smell
In addition to the following:
For adults (18 years of age and older)
- Muscle aches/joint pain - not related to getting a COVID-19 vaccine in the last 48 hours.
- Extreme tiredness/no energy/general feeling of being unwell - not related to getting a COVID-19 vaccine in the last 48 hours.
For children (less than 18 years of age)
- Nausea, vomiting, and/or diarrhea
If you are experiencing severe symptoms (trouble breathing or chest pain), please go to your nearest Emergency Department or call 911.
Individuals must follow the appropriate screening tool or self-assessment tool to determine if they can enter a setting and/or get tested for COVID-19:
Anyone who is sick or has any symptoms of illness, including those not listed in the screening tool (for example, runny nose, sore throat, nasal congestion, abdominal pain, headache, pink eye, decreased/lack of appetite, etc.), should stay home until symptoms are resolved for at least 24 hours (or 48 hours for adults with nausea, vomiting or diarrhea symptoms). It is recommended to consult with a health care provider as needed.
If an individual is symptomatic (with any symptom) and gets tested for COVID-19, they (and their unvaccinated household members) should self-isolate pending test results.
Individuals with symptoms must self-isolate even if they have received a COVID-19 vaccine.
Individuals with symptoms (even if mild) associated with COVID-19 are required to self-isolate(external PDF) under the class order (PDF file) issued by the Medical Officer of Health under Section 22 of the Health Protection and Promotion Act. Individuals with symptoms must self-isolate even if they have received a COVID-19 vaccine.