Cold & Flu Prevention
How weather impacts viral transmission and how to stay healthy.
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Weather & Immunity
Cold weather itself doesn't cause the flu, but it creates conditions where viruses thrive. Low humidity dries out nasal passages, reducing your body's natural filters against viruses.
Best Practices
Viruses survive longer in cold, dry air. To combat this, consider using a humidifier in winter to keep indoor humidity around 40-60%. This helps deactivate virus particles and keeps your respiratory tract healthy.
Weather and health guidance is general information only and is not medical diagnosis or treatment advice. If you have asthma, cardiovascular disease, severe allergies, or other health concerns, consult a clinician and follow official local alerts.
Action Steps
- 1Monitor indoor humidity (aim for 40-60%)
- 2Dress warmly to avoid hypothermia
- 3Wash hands frequently
- 4Stay hydrated in dry weather