Experts in infectious disease control are using location data from Facebook users to help track the Covid 19 outbreak.

Facebook and the universities using the data have dealt with privacy concerns by aggregating the data several times over.

The studies hope to show the success of policies to get people to stay home.

The data can also show “if at first people stop moving but then begin to travel further once fatigue sets in,” said Caroline Buckee, an epidemiologist at Harvard’s School of Public Health who is among those leading the network.

Read More: One America News