Fig. 1From: Sex differences in the immune response to acute COVID-19 respiratory tract infectionMale sex is a risk factor for acute COVID-19 respiratory tract infection. A Age distribution of COVID-19 patients. B Male and female patients based on clinical classification of severity of COVID-19. C Male-to-female ratios of COVID-19 cases in 10 years of age increments. D Male-to-female ratios of COVID-19 cases based on ethnicity. E Mortality rate in males vs. femalesBack to article page