Explanation: The flu virus spreads through the air when a person who has the virus sneezes, coughs, or speaks. The flu can sometimes spread through objects that someone with the virus touched, sneezed, or coughed on. When a healthy person touches these contaminated items and then touches their mouth or nose, the virus can enter their system.
a mark or character used as a conventional representation of an object, function, or process, e.g., the letter or letters standing for a chemical element or a character in musical notation.
