Figure 3.
Comparison of age-specific cumulative incidence of serious illness associated with laboratory-confirmed influenza A(H7N9) virus infection, 31 March–21 April 2013, and age-specific poultry exposures, 2006 and 2007, China
Panels A and B show cumulative incidence and 95% confidence intervals of serious influenza (H7N9) cases in (A) urban and (B) rural populations, based on 98 serious cases reported by 21 April 2013. Panels C to F show rates of exposures to retail and domestic poultry in (C) urban Shenzhen in 2007. (D) rural Xiuning in 2007. (E) urban Guangzhou in 2006. and (F) semi-rural Guangzhou in 2006.