Covid-19 What We Know So Far

It has been almost three months since the world shook due to this recent outbreak, the Coronavirus Disease 2019 (Covid-19). The event started on December 31, 2019, when the WHO China Office received a report about 44 cases of unknown-origin pneumonia in Wuhan, Hubei Province. Pneumonia of unknown aetiology is defined as an illness without a causative pathogen identified that fulfils the following criteria: fever (?38°C), radiographic evidence of pneumonia, low or normal white-cell count or low lymphocyte count, and no symptomatic improvement after antimicrobial treatment for 3 to 5 days following standard clinical guidelines. Authorities report that the reported patients were isolated and receiving treatment in Wuhan medical institutions. The clinical signs and symptoms include fever, with some patients had difficulty in breathing, and chest x-ray showed invasive lesions of both lungs. Most cases (55%) with clinical onset before January 1, 2020, were associated with the Huanan Seafood Wholesale Market.