The cases of swine flu are increasing at an alarming rate. And one of the reasons why there has been an increase in the mortality (death rates) of swine flu this year is the delay in diagnosis. Moreover the fact that swine flu is often mistaken for viral fever or seasonal flu is what makes the matter worse. So when asked about how swine flu is different from regular flu and what are the symptoms that can be mistaken for swine flu here is what Dr Pradip Shah HOD and General Medicine specialist at Fortis Hospital Mumbai had to say.