John Hopkins Bloomberb School of Public Health -- COVID-19 School of Public Health Expert Insights INTERVIEW BY MELISSA HARTMAN | APRIL 20, 2020 Contact tracing has been a critical public health practice for decades.

ROCHESTER, Minn. (AP) — Vice President Mike Pence chose not to wear a face mask Tuesday during a tour of the Mayo Clinic in Minnesota, an apparent violation of the world-renowned medical center’s policy requiring them.

With many U.S. states lifting their restrictions according to their own timetables and needs, Americans are facing a bewildering multitude of decisions about what they should and should not do to protect themselves and their neighbors.  

WASHINGTON (AP) — President Donald Trump will sign an executive order Tuesday meant to stave off a shortage of chicken, pork and other meat on American supermarket shelves because of the coronavirus.

RENO, Nev. (AP) — A U.S. judge in Reno plans to hear Wednesday from lawyers for Democrats and conservative voting rights activists who are challenging — for different reasons — plans to conduct Nevada’s primary election predominantly by mail because of COVID-19.

(AP) As companies start planning their reopenings, business groups are pushing Congress to limit liability from potential lawsuits filed by workers and customers infected by the coronavirus.

WASHINGTON (AP) — Weeks after Robert Mueller was appointed special counsel in the Russia investigation, Roger Stone, a confidant of President Donald Trump, reassured WikiLeaks founder Julian Assange in a Twitter message that if prosecutors came after him, “I will bring down the entire house of cards,” according to FBI documents made public Tuesday.

BOISE (AP) — An anti-vaccine activist who was arrested in Idaho after she repeatedly refused orders by police to leave a playground that had been closed because of the coronavirus pandemic has apologized to the police officer.