An office worker is screened with an infrared thermometer as he enters a building in New Delhi, India. Prashanth Vishwanathan/Bloomberg via Getty Images hide caption toggle caption Prashanth Vishwanathan/Bloomberg via Getty Images Goats and Soda Coronavirus Symptoms: Defining Mild, Moderate And Severe March 13, 2020 These designations are often used to describe a patient's COVID-19 symptoms. At this stage of the outbreak, there aren't standard definitions, but there are preliminary guidelines.