Not that we have anything against migrant workers, mind you. As long as all the blood is properly screened, there shouldn’t be any problems, right? Shanghai health authorities released a report yesterday that claims only 1.17 percent of the city’s population are blood donors, and that 70 percent of all blood donations from street donation centers come from non-local migrant workers. Other statistics claim that China’s national blood donation rate stands at 0.87 percent, which is lower than the 4.54 percent and 1.01 percent seen in high-income to middle-income countries, respectively. Shanghai’s blood reserves are currently in dire straits, with available blood for emergencies being 30 percent lower than what’s necessary, and blood type A supplies standing at 35 percent lower than needed.