Dear Doctor, Last 3 months I have had cough cold fever and flu like symptoms for 4-5 days duration each time. My family GP has prescribed antibiotics (Fynal 500) and antipyretic (Febrex Plus) and the fever has gone after each episode. However, the cough and nasal congestion has persisted although a little lower. I am 46 year old, non-smoker, non-drinker, with no other co-morbities like diabeties, blood pressure or any such thing. I had even started exercising on the treadmill to build-up my immune system. Problem is that each time I have had to take 2-3 days leave from office to get well. I am worried about the frequent occurrence and request your advice on the following: Conclusive Screening tests to find out the exact cause, how to find the flaw in my immune system and medicinal or lifestyle changes required to overcome this situation.