Dois-tu porter un masque ?

Should you mask up?

1. Are you feeling uncomfortable or unsafe in the situation you are in?
   • Yes (2)
   • No (3)

2. Even if masks are not mandatory anymore, you can still choose to wear one (1). Masks are not only making you feel safer, they are also effective at protecting against many respiratory infections transmitted via droplets in the air (2).

3. Are you, or someone you will be in contact with, at risk of developing severe complications following a respiratory infection*?
   • Yes (4)
   • No (5)

4. You should wear a mask. It is a good idea to adapt your protective measures according to the most vulnerable person in the room, whether it is you or someone else (2,6,7,8).

5. Are you, and everyone present, up to date with the following vaccines** (9)?
   • Yes (6)
   • No or I’m not sure (7)

**There are other pathogens and important vaccines, but we’ve included the most important seasonal respiratory diseases with approved vaccines.

6. Do you have any of the following symptoms (17,18,19,20,21,22)?

• Fever or chills
• Muscle pain or body aches
• Difficulty breathing
• Headache
• Cough
• Sore throat
• Runny or stuffy nose
• Tiredness
• Loss of taste or smell
• Upset stomach (vomiting, diarrhea, etc.)

• Yes (8)
• No (11)

7. Masks not only contain the viral particles you might shed if infected, they also reduce the amount of viral particles you might inhale from others (23). Without vaccine protection, masks (especially high quality masks such as N95 (24,25)), combined with other protective measures, are the best way to protect yourself.

8. Test yourself for COVID. What is your result?
   • Positive (9)
   • Negative (10)

9. What to do in case of a positive COVID test can vary according to where you live. Check out our resources for links to provincial and territorial  COVID pages (27,28).

10. You should stay home and limit your contact with others if you are sick or presenting any symptoms of a respiratory infection (3). If not possible, you should wear a mask in public and wash your hands frequently (8).

11. Have you been in close contact with a confirmed COVID-19 case recently?
    • Yes (12)
    • No (13)

12. If no symptoms, wait at least 5 full days before self testing for the most accurate results (29). In the meantime, wearing a mask in public will help limit potential pre-symptomatic and asymptomatic transmission (20,30).

13. Are the case numbers currently increasing in your area?
    • Yes (14)
    • No (15)

14. Increased case numbers often means increased community transmission (31). Combined with the fact that people can be infectious a couple of days before showing any symptoms (20), wearing a mask in crowded spaces, especially indoors, is a good way to reduce your and others risk of infection (3).

15. Will you be inside or outside?
    • Outside (16)
    • Inside (17)

16. Outdoor gatherings are not considered a high risk situation as ventilation is optimal. There is still a risk if the space is crowded, so don’t hesitate to mask up (32).

17. Can you answer “Yes” to both of these questions (3)?

• Will you be able to distance yourself from others?
• Will there be good ventilation or the possibility to open windows and doors (even if it’s only for a couple of minutes at a time)?

• Yes (18)
• No (19)

18. Wearing a mask is up to you and how comfortable you feel. In your situation, the risk is probably low but never zero.

19. Wearing a mask in crowded settings, especially if indoor, public and poorly ventilated, is always a good idea in times where respiratory infections are high (3).

The respiratory syncytial virus (RSV) is also a virus of concern at this time of year in Canada, especially for the little ones (13,14). Unfortunately there is no vaccine currently available in Canada against RSV, but research is ongoing (14,15,16).

Masks are a great tool to prevent the transmission of many viruses causing respiratory infections.

Wearing a mask in an indoor public setting can lower your risk of testing positive for COVID-19 significantly (33).

But it can be hard to decide when exactly is the best time to wear one. There are a few things to take into consideration:

1. Your level of comfort
2. Risk level, for you and your close contacts.
3. Your current vaccine protection
4. Presence of symptoms
5. The number of cases in your area
6. Where you will be gathering
7. How crowded the space will be

Remember, an important part of mask-wearing is to respect others’ choices (1,23).

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