covid was identified on december 31, 2019 WHO was informed of cases of pneumonia of unknown cause of Wuhan city, china. a novel corona virus was identified as the cause by Chinese authorities on jenuary 7, 2020 and was temporarily named "2019-nCoV". there where many cases in other countries, this is why we need to becareful, always wash your hands with soap and water, use sanitizer, wear face mask, wear face shield, and lastly be vaccinated for safety.