Subways seeded the massive coronavirus epidemic in New York City
In a new working paper, Professor of Economics Jeffrey Harris writes that NYC's multi-tentacled subway system was a major disseminator — if not the principal transmission vehicle — of coronavirus infection.
detail, NYC subway and transporation map
EXCERPT | WORKING PAPER | APRIL 13, 2020
"The near shutoff of subway ridership in Manhattan – down by over 90 percent at the end of March – correlates strongly with the substantial increase in the doubling time of new cases in this borough. Maps of subway station turnstile entries, superimposed upon zip code-level maps of reported coronavirus incidence, are strongly consistent with subway-facilitated disease propagation.
"Local train lines appear to have a higher propensity to transmit infection than express lines. Reciprocal seeding of infection appears to be the best explanation for the emergence of a single hotspot in Midtown West in Manhattan. Bus hubs may have served as secondary transmission routes out to the periphery of the city."