'In the contemporary world, it is expected that new diseases and older infectious menaces will spread almost instantly around the globe, as happened with Covid-19. But where was the inflection point? Elizabeth Blackmore, a doctoral student at Yale, and James O. Lloyd-Smith, an ecologist at the University of California, Los Angeles, set out to find the moment when viral transmission started to change.'

https://www.nytimes.com/2024/07/26/health/viruses-ships-transmission.html