The crowds surged through the gates, fought their way up the stairs of the 160-year-old station, poured across the platforms and engulfed the trains.

It was May 5, around 10 a.m. Surat was beastly hot, 106 degrees Fahrenheit (41 degrees Celsius). Thousands of migrant laborers were frantic to leave — loom operators, diamond polishers, mechanics, truck drivers, cooks, cleaners — the backbone of Surat’s economy. Two of them were Rabindra and Prafulla Behera, brothers and textile workers, who had arrived in Surat a decade ago in search of opportunity and were now fleeing disease and death.

Rabindra stepped aboard carrying a bag stuffed with chapatis, an Indian flatbread. His older brother, Prafulla, clattered in behind, dragging a plastic suitcase packed with pencils, toys, lipstick for his wife and 13 dresses for his girls.