Harvard epidemiologist Marc Lipsitch outlined several scenarios — most of them bad — for getting America back to work

Harvard epidemiologist says U.S. needs to dramatically increase testing and social distancing, adding to the closings, cancellations, and shifts online.

Harvard epidemiologist Marc Lipsitch says two-thirds of travelers with coronavirus who are entering U.S. may have been missed by screening efforts.

A rapid expansion of coronavirus testing is needed to understand the extent and nature of the epidemic’s track in the U.S., Harvard experts said.

A key unanswered question in the coronavirus epidemic concerns why children seem to be getting fewer or less-serious infections from the new contagion.

Harvard’s Marc Lipsitch said evidence indicates that the international cordon keeping coronavirus cases bottled up in China is a leaky one, and it’s likely that the relative handful of global cases reported so far are undercounted. If true, that will lead to widespread illness internationally, including in the U.S.

As the number of coronavirus cases rapidly grows, the Gazette spoke with Professor of Epidemiology Marc Lipsitch, an expert in the spread of infectious disease and director of the Center for Communicable Disease Dynamics.