Can an air purifier prevent the flu?

HEPA purifiers reduce airborne particles including virus-laden aerosols, which may lower transmission risk. They work best combined with other measures like hand washing and ventilation.

What temperature indicates a fever emergency?

Adults should seek medical attention for temperatures above 103F (39.4C) or any fever lasting more than 3 days. For infants under 3 months, any fever above 100.4F (38C) warrants immediate medical attention.

Best Tech for Cold and Flu Season 2026