I have a 9 month old baby,and dengue is common in our area. i use moskishield patch and put it on his shirt just above his buttocks.is it ok to use this long term?

YES: Since you are placing the patch on his clothes and not on his skin, you can safely use it FOREVER! Congratulations on doing it the smartest way. Also remember loose, long sleeve garments also help prevent bites and carry no health risks. Finally, make sure environment is cleared of breeding grounds for mosquitoes. No standing water, like inside of old tires or junk piles lying around....