인플루엔자 또는 독감이라고 불리는, 호흡기에 영향을 미치는 바이러스성 감염병.
A common, highly contagious viral infection of the respiratory passages causing fever, severe aching, and catarrh, often used as a shortened form of influenza.
예문:
"The doctor recommended getting the annual flu shot before winter begins."
"She couldn't come to work because she was down with a terrible case of the stomach flu."
"Symptoms of the flu usually include high fever, body aches, and fatigue."