The 2019 novel coronavirus COVID 19 has affected 181 countries with approximately 1197405 confirmed cases by 5th April . Understanding the transmission dynamics of the infection in each country which got affected on a daily basis and evaluating the effectiveness of control policies are critical for our further actions. ...Some effective policies that yielded significant changes in the trend of cases were the lockdown policy in China, Italy, and Spain the effect observed after some days , the shutdown of all nonessential companies in Hubei the effect observed after 5 days , combined policy in South Korea, and reducing working hours in Iran....