Fig. 1From: Declining trend in HIV new infections in Guangxi, China: insights from linking reported HIV/AIDS cases with CD4-at-diagnosis dataThe CD4-staged modelling structure. New infections happen at rate h(t), then progress through each HIV stage until AIDS stage with progression rate denoted by ρij(t). HIV cases may be diagnosed at any HIV stage, with diagnosis probability of di(t) or be diagnosed until AIDS stageBack to article page