On, users can view nursing home connectivity across the entire U.S. in only a few clicks. Simple search functions allow you to filter by state, county, city or nursing home, and table or diagram views of the data make it easy to understand. The website is ready to be used immediately — no setup or configuration needed.

Translate complex research into an easy-to-understand, actionable tool


Respond to emerging outbreaks and better understand infection risk moving forward allows users to see how many nursing homes in a given area have a high level of connectivity to other nursing homes. Facilities with high connectivity present the greater risk of spreading and infection than those with fewer connections. They are also at greater risk for receiving inbound infection.

Empower public health professionals and nursing home advocates to use the research data to save lives

The data presented on allows public health officials and nursing home decision-makers to:

  • Activate an early warning system to let connected nursing homes know when there is an outbreak in a home with shared staff 
  • Identify hyper-connected homes where levels of connectivity risk may justify elevated monitoring and protective measures 
  • Prepare for future outbreaks by developing informed staffing plans and guidelines for workers visiting multiples sites

Note: The researchers’ source of anonymous cell phone data represents about 30% of all U.S. cell phones. So while it does not capture all connectivity, it does provide a representative picture of nursing home connectedness. We are unable to identify any individuals based on this data and did not examine travel to any locations besides nursing homes. 

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USDR is available to provide pro bono assistance to help guide your COVID-19 response efforts. is only one part of USDR’s dedicated health program to help state and local governments meet the urgency of the COVID-19 crisis. Using our existing rapid response model to deliver fast and free support, USDR’s health program assists with COVID-19 testing, exposure notifications apps, public health communications strategies, vaccine distribution, and more. See here for a full menu of USDR’s health-focused offerings.


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