The common cold, flu, and COVID-19 are all caused by viruses that affect your respiratory system, and all three illnesses share certain symptoms. Learn more about the similarities and differences between the three illnesses with this infographic. Due to the overlap between the illnesses’ symptoms, employees should be reminded to wear their facial covering when others are around, maintain 6 feet of distance from others, wash their hands regularly, and stay home if they begin to exhibit symptoms.