During June 3-12, CIDID member Jim Koopman presented at an infection transmission modelers meeting in Shanghai, to a complex systems group in Qingdao, to bioinformaticists in Tianjin, and to the China CDC in Beijing. He established new collaborative modeling efforts with the Chinese on polio and HIV. In each case the intention is to use the new methods fitting models directly to sequences developed by CIDID members Alex Smith, Ed Ionides, and Aaron King. The 2012 polio epidemic in Xinjiang imported from Pakistan will be analyzed to estimate waning parameters. The exploding HIV epidemic in MSM in China will be analyzed to estimate infection and diagnosis rates by region.