
This AI-assisted content is intended for academic reference and informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult qualified healthcare professionals regarding any medical condition or treatment decisions. All risks arising from reliance on this content are borne by the user, and the publisher assumes no responsibility for any decisions or actions taken.
According to Cleveland Clinic:"The viruses and bacteria that cause upper respiratory infections are contagious."
Most URIs are caused by viruses. These spread through droplets when you cough, sneeze, or even talk — and through contaminated surfaces like doorknobs or phones.
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An upper respiratory infection (URI) is contagious in most cases. According to Cleveland Clinic:"The viruses and bacteria that cause upper respiratory infections are contagious."
Disclaimer:
This AI-assisted content is intended for academic reference and informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult qualified healthcare professionals regarding any medical condition or treatment decisions. All risks arising from reliance on this content are borne by the user, and the publisher assumes no responsibility for any decisions or actions taken.

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