As winter ends, cases of seasonal flu and colds dwindle. Could the same thing happen with COVID-19?
Viruses surge in winter for three reasons:[1]
- Viruses are more stable in cold, dry conditions with low levels of sunlight.
- People spend more time together indoors during the colder months. This allows viruses to spread from person to person easier.
- Our immune systems may be weakened due to a vitamin D deficiency caused by lack of sunlight.