By Dr Karthiyayini Mahadevan, Head, Wellness and Wellbeing at Columbia Pacific Communities     Features Cold Flu COVID-19 Presenting Symptoms Most common       Less common   Running nose, sneezing       Fever, sore throat   Headache, running nose, fever     Sore throat   Sore throat, fever, body ache, loss of smell, taste and have diarrhoa H/o Contact tracing with COVID positive individual either as primary or secondary