Massive rural-to-urban migration in China may influence infectious disease spread, but the same powerful social forces that reliably promote migration can also be used to design more effective health systems. The authors systematically reviewed eight databases to identify research studies...

MRNA technology has proved in the context of the COVID-19 pandemic its breakthrough value as a basis for vaccines. There has been rapid development of highly safe, effective and robust mRNA vaccines, and these can be delivered at large scale. Yet the technology is the result of a long process of...

We construct a quantitative model of an economy hit by an epidemic. People differ by age and skill, and choose occupations and whether to commute to work or work from home, to maximize their income and minimize their fear of infection. Occupations differ by wage, infection risk, and the...