Meat that hasn't reached proper cooking temperature may spread food-borne illness to your family and friends. Meat thermometers are the only way you can ensure meat is properly cooked.
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Whooping Cough Fact Sheet
Pertussis, also known as whooping cough, is a contagious respiratory illness that can be passed on by people who don't even know they have whooping cough.
Oldham County Cooperative Extension Blog 