In early January 2020, the discovery of a new coronavirus (Covid-19) linked to grouped cases of pneumonia was announced by the Chinese health authorities and the WHO. The epicenter of the epidemic is in China in the city of Wuhan, but soon spread to the rest of the country, then to nearby countries (Thailand, Japan, South Korea, Taiwan, Hong-Kong, Macao, Singapore , Malaysia, Vietnam, Nepal, Cambodia), as well as in the United States, Canada, Australia, United Arab Emirates, Philippines, Russia, United Kingdom, Italy, Spain, Sweden, India, Sri Lanka, Germany and Finland. On January 30, the World Health Organization (WHO) declares a public health emergency of international concern. The main symptoms of the coronavirus are fever and respiratory signs such as coughing or shortness of breath.