A staff member in Rep. David Schweikert David SchweikertHouse Democratic campaign leader predicts bigger majority Democrat Hiral Tipirneni wins Ariz. primary to challenge Rep. David Schweikert Ethics watchdog finds 'substantial' evidence of improper spending by Rep. Sanford Bishop MORE's (R-Ariz.) D.C. office has tested positive for COVID-19, the congressman said Sunday.

The staff member is resting "comfortably at home and following guidance from local health officials," Schweikert said in a statement.

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Schweikert said his D.C. office will be closed with staff members working remotely until further notice.

He said staff at his Scottsdale, Ariz. will also work remotely out of "an abundance of caution."

Sen. Maria Cantwell Maria Elaine CantwellHillicon Valley: Zuckerberg acknowledges failure to take down Kenosha military group despite warnings | Election officials push back against concerns over mail-in voting, drop boxes Bipartisan senators call for investigation of popular fertility app The Hill's Coronavirus Report: Mike Roman says 3M on track to deliver 2 billion respirators globally and 1 billion in US by end of year; US, Pfizer agree to 100M doses of COVID-19 vaccine that will be free to Americans MORE (D-Wash.) said Wednesday a member of her D.C. office tested positive for coronavirus. Cantwell’s announcement marked the first known instance of a congressional staffer getting the virus.

Mayor Muriel Bowser declared a state of emergency in D.C. on Wednesday.

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A total of 16 cases of COVID-19 were confirmed in D.C. as of Saturday, according to the D.C. health department.

Bowser announced restrictions on restaurants and bars Sunday, including capping gatherings at restaurants and bars to no more than 250 people and prohibiting bar seating and service to standing patrons.

Former House Intelligence Committee attorney Daniel Goldman said Sunday he tested positive for COVID-19.

House Intelligence Committee Chairman Adam Schiff Adam Bennett SchiffTop Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence Overnight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies MORE (D-N.Y.) said earlier that a former member of his staff had tested positive. An aide to Schiff confirmed the announcement was referring to Goldman.

Schiff said medical professionals believe the former staffer contracted the virus after leaving the office, but said his office will take additional precautions over the next few days.