The models can feed in numbers from around the country on deaths and other data points. They use statistical analysis to predict the outbreak’s path, ferocity and ultimate impact as measured in people sickened, hospitals overwhelmed and lives lost. Fauci and Birx have talked about using testing data — once enough is available.

Part of the idea is to try to drill down close to the community level, providing a tailored view that can help state and local officials. For example, the age of a local population can make a difference.

A senior administration official said other streams of data being analyzed include local hospital capacity, the ability of health departments to trace the contacts of people who test positive, the types of businesses in a community and whether they could ensure worker safety if they reopen and economic modeling under varying scenarios. The official provided details on the condition of anonymity to discuss ongoing planning.

Birx said the White House task force has looked