Before revision: Exploiting the SIQR model for COVID-19, I show that the wavy infection curve in Japan is the result of fluctuation of policy on isolation measure imposed by the government and obeyed by citizens , Assuming the infection coefficient be a 2-valued function of the number of infected individuals , I show that when the removal rate of infected individuals is between these two values, the wavy infection curve is URLanized.
After revision: Exploiting the SIQR model for COVID-19, I show that the wavy infection curve in Japan is the result of fluctuation of policy on isolation measure imposed by the government and obeyed by citizens . Assuming the infection coefficient be a 2-valued function of the number of infected individuals , I show that when the removal rate of infected individuals is between these two values, the wavy infection curve is URLanized.