This form of the virus was called Coronavirus 2019, or COVID-19, since it appeared in 2019. The studies revealed that the cases that emerged were a new type of coronavirus that was not previously described. The application of lockdown by governments is also thought to be effective on psychology, environment and economy besides having impact on Covid-19.Ī disease similar to pneumonia cases began to emerge in Wuhan City, Hubei Province, China in December 2019. This study offers initial evidence that the COVID-19 pandemic can be suppressed by a lockdown. The lockdown, one of the social isolation restrictions, has been observed to prevent the COVID-19 pandemic, and showed that the spread of the virus can be significantly reduced by this preventive restriction in this study. The lockdown days was significantly correlated with COVID-19 pandemic based on unconstrained (r = −0.9126, F-ratio = 6.1654 t-ratio = 2.40 prob > .0203 with 49 observations) and based on Tukey-lambda (r = 0.7402, λ = 0.14). The correlation tests were used for data analysis based on unconstrained (normal) and constrained (Tukey-lambda). COVID-19 cases and lockdown days data were collected for 49 countries that implemented the lockdown between certain dates (without interruption). This study aims to analyze the effect of lockdown days on the spread of coronavirus in countries. COVID-19's daily increasing cases and deaths have led to worldwide lockdown, quarantine and some restrictions.
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