India, Sept. 1 -- Lately, everyone seems to be falling sick, experiencing fever, cough, body aches, and fatigue. With similar symptoms appearing all around, it can be difficult to tell whether you have regular seasonal flu or H1N1. Although the two illnesses have several overlapping signs, knowing how H1N1 may progress and recognising its warning signs is important.ALSO READ: Dengue or viral fever? Doctor explains why they may appear to be 'similar' and shares 9 signs to tell them apart

Dr Chirag Tandon, director of internal medicine at ShardaCare-Healthcity, explained how to differentiate between H1N1 and ordinary flu. Their initial symptoms may appear similar; the way the illness progresses can differ. "With ordinary flu, patients gene...