TY - JOUR TI - Epidemiology of COVID-19: What changed in one year? AB - Abstract: A 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.Key words: COVID-19, epidemiology, pandemic AU - Kato, Yasuyuki AU - BULUT, CEMAL DO - 10.3906/sag-2110-153 PY - 2021 JO - Turkish Journal of Medical Sciences VL - 51 IS - Özel Sayı 1 SN - 1300-0144 SP - 3253 EP - 3261 DB - TRDizin UR - http://search/yayin/detay/485301 ER -