• Cemal Bulut and Yasuyuki Kato.
• Department of Infectious Diseases & Clinical Microbiology, Faculty of Medicine, Health Science University, Ankara, Turkey
• Turk J Med Sci. 2021 Dec 17; 51 (SI-1): 3253-3261.

AbstractA coronavirus brought the first pandemic attack of this century as a flu virus did a hundred years ago. This greatest pandemic of the century brings us new opportunities to understand and explore the dynamics of a contagious disease. Nearly two years later, we are still collecting the evidence to understand the disease. Some basic epidemiological properties are still urgently needed. Not only the origin of the virus but also Ro value, possible transmission routes, epidemiologic curves, case fatality rates, seasonality, severity and mortality risk factor, effects on the risk groups, differences between countries and so on still require strong evidence prior to making final suggestions. In this review, we tried to evaluate the epidemiological evidence to scrutinize where exactly we are in this pandemic.This work is licensed under a Creative Commons Attribution 4.0 International License.

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