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The current epidemic of Corona virus can be captured using the stock and flow metrics. Differences between mortality ratio and confirmed fatality ratio appear important and suggest metrics used during the epidemic and after the epidemic should be different.
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... the opposite, I advocate the mortality ratio (M.R.) corresponding to the total number of deaths divided by the total number of people not infected anymore describe better the dangerousness of the virus as it describes the disease outcome. The Figure 2 below shows the difference between the mortality ratio (M.R) and the confirmed case fatality ratio (C.F.R). C.F.R. appears quite constant oscillating between 2 -3 % whereas M.R. is important at the beginning of the epidemic before decreasing to reach 9% On February 25 th . ...
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... A total of 210 countries has been affected. This virus outbreak was related to a huge seafood and animal market, and inquiries were ongoing to control the origins of the infection [35,36] observed that the (3.4, 35, and 62) % were died, recovered and still now infected. ...
The viral diseases are a malign condition in the world from 2001 to 2020. The human novel coronavirus disease (COVID-19) was an initial identification in Wuhan, China in December 2019. The major objective is to critically review the present situation of coronavirus in the world. Severe Acute Respiratory Syndrome coronavirus (SARS-CoV) in 2001, Middle East Respiratory Syndrome coronavirus (MERS-CoV) in 2012 and the COVID-19 in 2019 had serious effects in human life in China, Saudi Arabia, and China, respectively. The COVID-19 is a highly mutated virus for the human population in 2020. This review study reveals the host of the virus, history, characteristics, preventive measure, treatment, effects and the epidemic situation in the world.
OBJECTIVES Description of the epidemiological situation of COVID-19 and analyze and compare between ten-health systems control epidemic around the word for use in public health system settings. METHODS This study was a descriptive, exploratory analysis of all cases of COVID-19 in the world especially in the ten countries. We conducted a Scopus review of the literature. Thirty articles are been recolted. RESULTS The estimates of human transmissibility (R0) range from 2 to 3. Pre-symptomatic transmission has been reported. The Incubation period is 5.1 days; the overall global case fatality rate is currently approximately 6%. The countries are characterized into three categories of pandemic control: excellent level of control fo r Germany, South Korea, Hong Kong and turkey a medium level for China, Morocco and a low level for the USA, France, Spain and Italy. CONCLUSION The present descriptive, exploratory analysis offers important new information to the international community on the Corona virus Pandemic in world. Important questions remain including determination of infectiousness period, identification of transmission routes, and effective treatment and prevention methods including further test development, drug development, and vaccine development.
