In recent days, several countries have discovered, thanks to scientific research, that the date of the first confirmed cases of COVID-19 was much earlier than previously thought. The World Health Organization calls on all countries to review their first cases. According to a recent report by the news channel of the American broadcasting group ABC (American Broadcasting Company), an unknown respiratory illness spread to a retirement home in Virginia in July 2019 and 54 people contracted it. In the Greenspring community, located in Springfield, Va., 54 people, two of whom died, had respiratory symptoms, including fever, cough, body ache, shortness of breath, hoarse voice, and tired. According to officials from the local health authority, the elderly are vulnerable to respiratory diseases, they are often victims of the flu in winter, but these cluster cases were noted last July. For the two fatal cases, they had chronic illnesses and were hospitalized with pneumonia. The origin of these sick cases remains unknown.