On the secondary waves of the pandemic launched in Iran and other countries

In the last decade of April 2020, the second epidemic wave began in Iran. If judging by the dynamics of total cases, the birth of this second wave coincides practically with the maximum growth rate of the primary epidemic started in Iran from the very beginning of 2020. Today, the secondary epidemic wave almost doubles the peak of the primary. The new epidemic wave grows rapidly and unpredictably. Also, we admit that the secondary epidemic waves are already getting started in other countries.