Hahahaha.... no. Most of the crap people get on vacation is ingested anyway. Or airborne. So unless you plan on Evian and a face mask, don't worry about things. Unless you have a really bad nail-biting habit. Besides, in your example, typhoid is usually ingested, and treated with antibiotics.

besides, wearing gloves all day long is a GREAT way to develop an allergy to the glove (latex, nitrile, whatever). And then you'll be much more prone to problems next time you're in the hospital.