epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic common source epidemic epidemic epidemic epidemic epidemic common source epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic Dictionary definition epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic Dictionary epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic the definition epidemic epidemic epidemic epidemic the definition epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic common source epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic epidemic