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  Indian J Med Microbiol
 

Figure 4: The trend of COVID-19 outbreaks. (A) The general incidence rate of COVID-19 patients for 20 cities in Mazandaran Province; (B)Comparison of COVID-19 incidence rate in 4 age groups; (C) Comparison of COVID-19 patients' fatality rate in 4 age groups.

Figure 4: The trend of COVID-19 outbreaks. (A) The general incidence rate of COVID-19 patients for 20 cities in Mazandaran Province; (B)Comparison of COVID-19 incidence rate in 4 age groups; (C) Comparison of COVID-19 patients' fatality rate in 4 age groups.