A member asked:
When can a cold turn it a upper respiratory infection?
7 doctors weighed in across 2 answers
Yes it can: The most common cause of colds are viruses. These can in turn become bacterial infections that can affect the upper respiratory system. Signs to look for when concerned that your has turned into an upper respiratory infection include sinus pain or earache. If you are producing increased nasal discharge that is green to dark yellow in color then be concerned about a bacterial infection.
Answered 1/5/2019
6.7k views
"Always": A cold is a type of upper respiratory infection (URI) caused by a virus. Uri's can also be caused by bacterial infections.
Answered 9/16/2018
5.4k views
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