United States: Proposed CDC rules would force airlines to collect contact tracing information 

In mid-February the Federal Register published new CDC rules, which came into interim effect on February 7, under which airlines are required to collect the name and contact information of all passengers and crew arriving in the United States on international flights, and to transmit this information to the U.S. Centers  for Disease Control and Prevention within 24 hours of an order to do so. Written comments were accepted until March 13. In response, EFF asked CDC to explain what it will do to ensure that the sensitive data it collects is used only for the purpose of containing communicable diseases and that it is purged when its usefulness in contact tracing has passed.

Sources: 

https://www.govinfo.gov/content/pkg/FR-2020-02-12/pdf/2020-02731.pdf
https://www.eff.org/deeplinks/2020/03/protecting-civil-liberties-during-public-health-crisis