Internationally, cases of tuberculosis have decreased in recent years, but not in Latin America. The region has seen a 19% increase in cases over the same period. A recently published study in Lancet Public Health found that the rising incarceration rates in countries like El Salvador, Brazil and Argentina are a major factor. The World’s Host Carolyn Beeler spoke to the report’s lead author Yiran Liu, an epidemiologist and public health researcher based in New Haven, Connecticut.