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[Comment] Diaspora engagement in humanitarian emergencies and beyond

Migration of health workers from low-income and middle-income countries (LMICs) to high-income countries continues unabated, with substantial effects on the development of health systems in LMICs.1–3 WHO estimates that an additional 4·3 million health-care workers are needed to meet global health-care needs, with acute shortages in LMICs.4 Yet almost 25% of physicians in high-income countries such as the USA, UK, Australia, and Canada are foreign-born and from the very LMICs that face shortages in health-care workforces.