I went out to a crowded place on saturday.. tried to avoid h1n1..covered my nose n mouth..used hnd sanitizer gargled..now i have sore throat. .why????

Varies: Don't worry just yet. It could be allergies, or irritation from something else. Yes despite taking precautions it's still possible you caught a viral infection. Monitor your symptoms and if they get worse or you notice white spots (or redness) in your throat, get a fever, or any other symptoms go see the doctor. Drink tea with honey and take Airborne or some vitamin C with zinc.