www.sciencedaily.com
In a striking real-world experiment, researchers found that the flu did not spread from sick patients to healthy volunteers, even after days of close indoor contact. The study revealed that limited coughing and well-mixed indoor air kept infectious virus levels incredibly low. Additionally, the middle-aged participants may have benefited from age-related resistance to the flu. Consequently, the results highlight ventilation, consistent air movement, and masking as essential defenses against airborne infection.
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