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  Indian J Med Microbiol
 

Figure 3: Mean comparison of COVID-19 incidence rate and fatality rate in 4 age groups according to the WHO World Standard Population in 20 cities of Mazandaran Province from February 22, 2020 to April 10, 2021. Simple bar mean of age (A) incidence rate and (B) fatality rate by category.

Figure 3: Mean comparison of COVID-19 incidence rate and fatality rate in 4 age groups according to the WHO World Standard Population in 20 cities of Mazandaran Province from February 22, 2020 to April 10, 2021. Simple bar mean of age (A) incidence rate and (B) fatality rate by category.