New Rochelle, a suburb north of New York City, has one of the largest clusters of coronavirus infections in the U.S. We visited the community to find out how the containment measures were being implemented and how successful they have been. On today’s episode: Sarah Maslin Nir, a breaking news reporter at The New York Times. For more information on today’s episode, visit nytimes.com/thedaily.  Background reading: Gov. Andrew M. Cuomo of New York created a “containment zone” in New Rochelle last week, hoping to curb the spread of the virus in “the single most troubling area in the state.” Soon after, the National Guard arrived to help implement the measures.New York is among about 10 states that have set up drive-through testing centers, as state and local leaders try to figure out how to safely screen more people.