Answer:
Yes it can.......?????????
There are several sphincters that appear along the gastrointestinal tract in the human body. The sphincters are; upper esophageal, lower esophageal, pyloric, ileocaecal, and the inner and outer anal sphincters.
Probably gloves and a mask, because the most common transports of the flu, is people geting germs on their hands, which are carried to their mouth. A mask would prevent bodily fluids on the hands from getting in the mouth, and gloves will prevent bodily fluids from adhering to the hands.
By regularly washing your hands before a meal
