Ecological change, atmosphere warming, populace thickness increment, high relocation movement of the populace and different elements incite the development and spread of new diseases around the globe. The development in December 2019 of illnesses brought about by the new coronavirus («coronavirus infection 2019») has just stood out forever as a crisis of global significance. It is realized that the most widely recognized clinical appearance of another contamination is pneumonia, and furthermore in a huge piece of patient’s respiratory pain disorder. Our article gives a short explanatory audit of these brief rules of World Health Organization (WHO) and other distributed sources about clinical classification and triage of a New Coronavirus Infection (COVID-19). The group of creators communicates the expectation that this information will be valuable to specialists in furnishing clinical consideration to patients with another coronary infection disease, just as to educators in getting ready understudies and inhabitants. Serious intense respiratory sickness with fever and respiratory indications, for example, hack and brevity of breath, include the working case definition used to choose individuals for viral testing. This system catches average suggestive introduction, yet defectively recognizes strange appearances, for example, patients without respiratory indications or truth be told, exceptionally gentle side effects. One generally referred to demonstrating study presumed that up to 86% of cases might have been missed in China, also, reports of patients with irregular introducing side effects are rising around the world.