How does Temperature Affect the Spread of Viruses?

Ambient temperature can have a strong  influence on the activity and spread of  viruses. For example, other viruses that cause  respiratory infections often occur in the  winter months. According to Frank van  Kuppeveld, professor of virology at Utrecht  University, this stems from reduced  resistance of the mucous membranes18 in the  nose when cold air is inhaled. Keeping the  temperature at the ideal range indoors, 19°C  to 24°C (66°F to 75°F), helps you avoid  drying of the nasal passage that makes you  more susceptible to viruses.