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What is World health day is celebrated every year on:- and explain in detail?
7th April World health day Days of public health impoance Day Public health impoance 30th January Anti-leprosy day 2nd Wednesday of March No smoking day 24th March Anti-TB day 7th April World health day 31st May No tobacoo day 5th June World environment day 1st July Doctors day 8th September World literacy day 10th November Universal immunization day 1st December World Aids day