It could be: 1. EBV Epstein barr virus causes Mono 2 Sinusitis 3. Any of the numerous cold viruses mutating into 3 week duration.
Answered 11/2/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
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