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Trump is 'not yet out of the woods' but his team is 'cautiously optimistic,' White House physician says

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The U.S. president is "not yet out of the woods" even though he is doing well and has completed the second dose of Remdesivir therapy, White House physician Dr. Sean Conley said in a statement on Saturday night.

His comments came hours after President Donald Trump tweeted his first video statement since being admitted to Walter Reed Medical Center with coronavirus. In the video, Trump said he was feeling much better but also sounded cautious about his condition. He acknowledged the "real test" will come over the next few days as he receives treatment.

The latest updates come amid confusing reports about Trump's condition.

The White House physician said Trump is not currently on supplemental oxygen but would not comment on whether he had received oxygen at all. In an interview with Fox News on Saturday night, White House Chief of Staff Mark Meadows said the president's oxygen levels "dropped rapidly" on Friday morning, causing some concern.

Here are today's key updates so far:

VIDEO4:4104:41
President Trump walks to Marine One before heading over to Walter Reed

The following data was compiled by Johns Hopkins University:

  • Global cases: More than 34.8 million cases
  • Global deaths: More than 1 million
  • U.S. cases: More than 7.3 million
  • U.S. deaths: More than 209,000

White House releases photos of Trump working from Walter Reed military hospital

The White House released photos of President Donald Trump working in the presidential suite at Walter Reed National Military Medical Center in Bethesda, Maryland on Saturday.

Trump was taken to the military hospital on Friday as a precautionary measure after he tested positive for the coronavirus.

His daughter Ivanka Trump, who is a White House senior advisor, tweeted the photo of her dad. — Joanna Tan

Trump's oxygen level 'dropped rapidly' on Friday, Meadows says

President Donald Trump's blood oxygen level "dropped rapidly" on Friday morning, sparking concerns about his health, White House Chief of Staff Mark Meadows told Fox News on Saturday night.

In an interview with Fox News host Jeanine Pirro, Meadows said both he and White House physician Dr. Sean Conley were "real concerned" about Trump's condition on Friday morning.

"I can tell you the biggest thing we see is that with no fever now, and with him doing really well with his oxygen saturation levels. Yesterday morning, we were real concerned about that. He had a fever, and his blood oxygen level had dropped rapidly."

He reiterated Conley's assessment that the president was not yet out of the woods, but said he was "vey, very optimistic" based on the president's current results. — Joanna Tan

Trump is 'not yet out of the woods,' but team remains cautiously optimistic, White House physician says

President Donald Trump has completed his second dose of Remdesivir but is "not yet out of the woods," his physician said in an update on Saturday night.

"He remains fever-free and off supplemental oxygen with a saturation level between 96 and 98% all day," Dr. Sean Conley said in a statement.

"While not yet out of the woods, the team remains cautiously optimistic," said the While House physician. The president will continue to be closely monitored, he added. — Joanna Tan

Trump says he's starting to feel better, but 'real test' comes over the next few days

President Donald Trump addresses the U.S. public after being hospitalized at Walter Reed. October 3, 2020.
The White House

President Donald Trump, in a video posted to his Twitter account, said he's starting to feel better but the real test will come over the next few days as he receives treatment at Walter Reed Medical Center. 

"I'm starting to feel good," Trump said. "You don't know over the next period of a few days. I guess that's the real test, so we'll be seeing what happens over the next couple of days. I just want to be so thankful for all the support I've seen."  —Spencer Kimball

New York City 'on the edge of a precipice,' former CDC director says

New York is responding to growing clusters of coronavirus cases in 20 "hotspot" ZIP codes that are reporting positivity rates, or the number of tests coming back positive, far above other parts of the state, according to a statement from Gov. Andrew Cuomo's office on Saturday. 

More than half of the hotspot ZIP codes are from Kings and Queens counties, which are located in New York City's Brooklyn and Queens boroughs. Although the top 20 ZIP codes are home to 6.7% of the state's population, they represented 26% of Friday's new Covid-19 cases, Cuomo said.

Dr. Tom Frieden, the former director of the U.S. Centers for Disease Control and Prevention under President Barack Obama, warned on Twitter that New York City is "on the edge of a precipice" and is at "a high risk of Covid resurgence." — Noah Higgins-Dunn

Hospitalizations grow in the Midwest amid climbing cases

Growing coronavirus outbreaks across the American West and Midwest have started to take an alarming turn as some states report growing Covid-19 hospitalizations. 

Six states reached record high Covid-19 hospitalizations, based on a weekly average to smooth out the reporting, as of Friday, according to a CNBC analysis of data compiled by the Covid Tracking Project. Most of the states are based in the Midwest, including Missouri, Wisconsin, North Dakota and South Dakota. 

In Wisconsin, coronavirus cases are reaching levels the state has yet to witness in its response to the pandemic, according to Johns Hopkins University data. One of the state's hospitals this week reported reaching capacity and placing patients in hallways. 

"It was kind of a slow burn, and now it's clearly a forest fire," said Dr. Nasia Safdar, an infectious disease physician and the medical director for infection prevention at the University of Wisconsin School of Medicine and Public Health. — Noah Higgins-Dunn

Mitch McConnell: Trump 'sounds well and says he's feeling good'

Senate Majority Leader Mitch McConnell spoke with President Trump by phone and said he "sounds well and says he's feeling good."  

"We talked about the people's business — fighting the pandemic, confirming Judge Barrett, and strengthening the economy for American families," McConnell wrote in a Twitter post. "Let's keep our President & First Lady in our prayers."

Trump's physician said that the president's condition has improved at Walter Reed Medical Center, though a person familiar with the matter told reporters that the president's vitals were "very concerning" over the last day.  —Emma Newburger

Trump tested positive after return from Bedminster

President Donald Trump makes his way to board Air Force One before departing from Andrews Air Force Base in Maryland on October 1, 2020. The president is heading to Bedminster, New Jersey for a fundraiser.
Mandel Ngan | AFP | Getty Images

The White House sought to further clarify President Donald Trump's Covid-19 diagnosis timeline following conflicting comments.

"The president received his first positive test upon return from Bedminster," a White House official said on Saturday afternoon. The timing matters because Trump was present for a fundraiser at his Bedminster, New Jersey golf course Thursday, raising concern that attendees may have been exposed to the virus.  

The statement is the second clarification the White House has provided. The president's physician Dr. Sean Conley said he misspoke during today's press conference about the president's health condition. Conley claims he should have said day three of Trump's diagnosis, instead of 72 hours, and that the president was given a treatment two days ago, instead of 48 hours. 

Conley's first statement, which he now claims was incorrect, would have placed Trump's diagnosis well before the timeline originally put out by the administration. 

Conley said Trump was tested on Thursday after he came into close contact with someone who had tested positive, and after he began to show "clinical indications" that warranted testing. The test came back positive late Thursday night, according to the doctor.   —Pippa Stevens

Tensions rise outside Walter Reed hospital

Lewis Bracy holds signs while he protests US President Donald Trump in ront of supporters of the President outside of Walter Reed National Military Medical Center on October 3, 2020, in Bethesda, Maryland.
Andrew Caballero-Reynolds | AFP | Getty Images

Trump supporters and anti-Trump protesters confronted each other outside Walter Reed National Military Medical Center where President Donald Trump is hospitalized, NBC News reported.

NBC News witnessed a minor physical altercation and shouting between a Trump supporter and anti-Trump protester, though it's unclear who initiated the fight. No injuries or arrests have been reported.

"We can't hear you, you might want to take your mask off, come on," NBC News heard one Trump supporter shout through a megaphone.

About 50 people are currently gathered outside the hospital, mostly comprised of Trump supporters, NBC News reported.

Both pro-Trump and anti-Trump people are also driving along the road where media is set up, honking and shouting at reporters.

Local police and military police are now on the scene. —Hannah Miao

Doctor seeks to clarify Trump diagnosis timeline

White House physician Sean Conley, with medical staff, gives an update on the condition of US President Donald Trump, on October 3, 2020, at Walter Reed Medical Center in Bethesda, Maryland.
Brendan Smialowski | AFP | Getty Images

White House physician Dr. Sean Conley sought to clarify his earlier comments regarding the timeline of President Donald Trump's Covid-19 diagnosis. 

"This morning while summarizing the President's health, I incorrectly used the term 'seventy two hours' instead of 'day three' and 'forty eight hours' instead of 'day two' with regards to his diagnosis and the administration of the polyclonal antibody therapy," Dr. Conley said in a statement. He added that the President was first diagnosed with Covid-19 on the evening of Thursday, Oct. 1.

Regeneron, the maker of the drug, said that Dr. Conley was incorrect in his characterization. "REGN-COV2 is a combination of two monoclonal antibodies —meaning each was produced by making identical copies, or clones, of an antibody gene in a single B cell. Polyclonal antibody cocktails refer to antibodies made by mixtures of B cells," the company said in a statement to CNBC.

The public was made aware of the president's condition on Friday morning just before 1 a.m. ET via the president's official twitter account. —Pippa Stevens

U.S. 'wants & needs stimulus,' Trump says in tweet

President Donald Trump on Saturday commented on the ongoing stimulus talks, saying in a tweet that "our great USA wants & needs stimulus."

"Work together and get it done," he added.

The president's comment comes after House Speaker Nancy Pelosi and Treasury Secretary Steven Mnuchin have been at odds for months over additional stimulus measures.

Pelosi told MSNBC on Friday that the president's Covid-19 diagnosis "changes the dynamic" of stimulus talks since the Republicans "see the reality of what we have been saying all along."

The speaker and Treasury secretary talked on the phone Friday afternoon for more than an hour, Pelosi's spokesman Drew Hammill said. They discussed "areas of disagreement" and their "discussions will continue," he added.

House Democrats passed their $2.2 trillion proposal Thursday night, which is much larger than the $1.6 trillion package that Mnuchin has offered. - Pippa Stevens, Jacob Pramuk

Trump's vitals on Friday pointed to possible disease progression

President Donald Trump's vital signs on Friday pointed to a possible progression of Covid-19, a source familiar with Trump's condition told NBC News. "Some [of] the President's vitals signs Friday morning were early indicators of the potential for progression beyond mild illness," the person said. —Pippa Stevens

Schumer criticizes GOP for pushing forward with Supreme Court confirmation

U.S. Senate Minority Leader Chuck Schumer (D-NY) participates in a news conference at the U.S. Capitol in Washington, U.S. October 1, 2020.
Erin Scott | Reuters

Senate Minority Leader Chuck Schumer on Saturday criticized Republicans for moving forward with the scheduled confirmation hearing for Supreme Court nominee Amy Coney Barrett, even as several Senate Republicans test positive for Covid-19.

"The decision to recess the Senate for two weeks after at least three Republican Senators have tested positive for COVID-19 makes clear that the Senate cannot proceed with business as usual as the virus continues to run rampant," Schumer said. "If It's too dangerous to have the Senate in session it is also too dangerous for committee hearings to continue."

Majority Leader Mitch McConnell, R-Ky., announced that the Senate will not return in full until after Oct. 19 because of health concerns, but the Judiciary Committee will still hold confirmation hearings for Barrett on Oct. 12. - Emma Newburger 

Trump says he's 'feeling well!' in tweet

President Donald Trump said he's "felling well" in a tweet on Saturday afternoon, after spending the night at Walter Reed Medical Center.

"Tremendous progress has been made over the last 6 months in fighting this PLAGUE. With their help, I am feeling well!" he said in a tweet thanking doctors and nurses at Walter Reed.

The president's tweet comes amid conflicting reports over the state of his health. White House physician Dr. Sean Conley said he is "extremely happy" with the president's progress, but shortly after those remarks a person familiar with the matter told the White House pool that Trump's vitals over the last 24 hours were "very concerning" and that he is "still not on a clear path to a full recovery." —Pippa Stevens

Trump reportedly received oxygen at the White House on Friday

US President Donald Trump walks to Marine One prior to departure from the South Lawn of the White House in Washington, DC, October 2, 2020, as he heads to Walter Reed Military Medical Center, after testing positive for Covid-19.
Saul Loeb | AFP | Getty Images

President Donald Trump reportedly received supplemental oxygen on Friday while at the White House after he experienced difficulty breathing, according to The New York Times and Associated Press. The president was later transferred to Walter Reed.

During comments before reporters on Saturday, White House physician Dr. Sean Dooley said that the president is not using supplemental oxygen and is not having difficulty breathing. The doctor would not comment on whether Trump had received oxygen at all. —Pippa Stevens, Noah Higgins-Dunn

Trump's vitals over last 24 hours 'very concerning,' source tells reporters

Minutes after White House physician Dr. Sean Conley sought to assure the public on President Donald Trump's condition, a conflicting account of the president's health emerged.

A person familiar with the matter told White House reporters that the president's "vitals over the last 24 hours were very concerning. The next 48 hours will be critical in terms of his care."

"We are still not on a clear path to a full recovery," the person added.

These comments followed Dr. Conley's update, during which he said he's "extremely happy" with Trump's progress. —Pippa Stevens

Senate will not return in full until after Oct. 19, but Amy Coney Barrett hearings will continue

Judge Amy Coney Barrett, U.S. President Donald Trump's nominee to the Supreme Court, on Capitol Hill in Washington, October 1, 2020.
Erin Scott | REUTERS

Majority Leader Mitch McConnell, R-Ky., said the Senate will not return in full until after Oct. 19 due to concerns over the coronavirus, but the Judiciary Committee's Supreme Court confirmation hearings for Judge Amy Coney Barrett will begin as scheduled on Oct. 12. 

"Since May, the Judiciary Committee has operated flawlessly through a hybrid method that has seen some Senators appear physically at its hearings while other members have participated virtually," McConnell said in a statement.

"The Committee has utilized this format successfully for many months while protecting the health and safety of all involved. Certainly all Republican members of the committee will participate in these important hearings," McConnell said. 

Three Republican Senators have tested positive for Covid-19, two of whom are members of the Judiciary Committee, which will hold hearings on Barrett's nomination. 

Questions arise over when Trump received diagnosis

Saturday's briefing from White House physician Dr. Sean Conley has raised questions about when it was known that the president was sick.

Conley told reporters on Saturday that a treatment was given to the president 48 hours ago, which would've been on Thursday before President Donald Trump's positive diagnosis was announced. 

Top Trump aide Hope Hicks, who spends a lot of time with the president, tested positive Thursday morning. Later that day, Trump flew to New Jersey to participate in a fundraiser at his Bedminster golf club. —Noah Higgins-Dunn, Pippa Stevens

White House physician won't provide release date

U.S. Navy Commander Dr. Sean Conley, the White House physician, talks to reporters about U.S. President Donald Trump's health after the president was hospitalized for coronavirus disease (COVID-19) treatment, at Walter Reed National Military Medical Center in Bethesda, Maryland, U.S., October 3, 2020.
Ken Cedeno | Reuters

Though White House physician Dr. Sean Conley said the president's condition is improving, he stopped short at giving a date for when the president might be released from the hospital.

When asked if he had a discharge date in mind he said "I don't want to put a hard date on that." —Pippa Stevens

Trump's condition improving, says White House doctor

President Donald Trump's condition is improving since he has tested positive for Covid-19, Dr. Sean Conley said on Saturday. 

In comments before reporters, the White House physician said he is "extremely happy with the progress the president has made."

The president no longer has a fever and he is not receiving supplemental oxygen at this time, the doctors said. —Pippa Stevens

President's physician to provide update on condition shortly

White House physician Sean Conley (2nd R), with medical staff, arrives to give an update on the condition of US President Donald Trump, on October 3, 2020, at Walter Reed Medical Center in Bethesda, Maryland.
Brendan Smialowski | AFP | Getty Images

Dr. Sean Conley, President Donald Trump's physician, will provide an update on Trump's condition shortly. Dr. Conley's remarks will be made from Walter Reed National Military Medical Center, which is where the President spent the night.

The president's physician was initially slated to provide an update at 11 a.m. ET. - Pippa Stevens

Trump spends first night at Walter Reed

US President Donald Trump walks to Marine One prior to departure from the South Lawn of the White House in Washington, DC, October 2, 2020, as he heads to Walter Reed Military Medical Center, after testing positive for Covid-19.
Saul Loeb | AFP | Getty Images

President Donald Trump spent his first night at Walter Reed Medical Center after testing positive for coronavirus and developing mild symptoms. 

White House physician Sean Conley said in a memo late Friday evening that the president is "doing very well." Trump has started taking Remdesivir and does not require supplemental oxygen, Conley said.   

Trump was taken to Walter Reed yesterday evening "out of an abundance of caution" and will conduct his duties from the presidential offices at the hospital for the next few days. — Spencer Kimball

Here's who has tested positive or negative

(COMBO) This combination of file pictures created on October 03, 2020 shows (L-R, top to bottom) US President Donald Trump, First Lady Melania Trump, former communications director Hope Hicks, Senator Mike Lee, Republican of Utah, Counselor to the President Kellyanne Conway, Republican National Committee Chair Ronna McDaniel, Senator Thom Tillis, republican of North Carolina, Senator Ron Johnson, Trump Campaign manager Bill Stepien. As of October 3, 2020, all nine have tested positive for Covid-19 in the last two days.
Getty Images

President Donald Trump's positive test has raised concern that the virus could rip through the federal government and Capitol Hill. So far, several people in Trump's orbit have tested positive.  

Positive:

  • President Donald Trump
  • First Lady Melania Trump
  • Trump 2020 campaign manager Bill Stepien
  • White House advisor Hope Hicks
  • RNC Chair Ronna McDaniel
  • Sen. Mike Lee, R-Utah
  • Sen. Thom Tillis, R-NC
  • Sen. Ron Johnson, R-WI
  • Former White House advisor Kellyanne Conway

Negative:

  • Vice President Mike Pence
  • Second Lady Karen Pence
  • Democratic presidential candidate Joe Biden
  • Jill Biden
  • Democratic vice presidential candidate Kamala Harris
  • House Speaker Nancy Pelosi
  • Ivanka Trump
  • Jared Kushner
  • Barron Trump
  • Eric and Lara Trump
  • HHS Secretary Alex Azar
  • Treasury Secretary Steven Mnuchin
  • White House Economic Advisor Larry Kudlow
  • Attorney General William Barr
  • Secretary of State Mike Pompeo
  • Secretary of Defense Mark Esper
  • Chairman of Joint Chiefs General Mark Milley
  • Supreme Court nominee Amy Coney Barrett
  • DNC chair Tom Perez

—Spencer Kimball

Chris Christie tests positive for Covid-19

Governor Chris Christie has tested positive for Covid-19, he said Saturday. His positive test follows President Donald Trump and three senators' being diagnosed with the coronavirus. - Pippa Stevens

Testing couldn't keep the virus out of the White House

President Donald Trump's Covid-19 diagnosis underscores that testing alone is not an adequate public health intervention, CNBC's Will Feuer reports.

For months, the White House has utilized frequent, rapid coronavirus testing through a strategy known as screening. People without symptoms are frequently tested for the coronavirus before being allowed on the premises.

Trump and other officials have used frequent testing as a justification to disregard protocols recommended by public health experts, including wearing masks and socially distancing.

"I don't think any experts recommend that you use medical screening tests as a replacement for social distancing, or masks, or other kinds of mitigation efforts," Dr. Ben Mazer, an anatomic and clinical pathologist at Johns Hopkins Hospital, said in a phone interview. 

"Testing doesn't make you immune and testing doesn't eliminate the virus," said Dr. Sadiya Khan, an epidemiologist at Northwestern University. "No single strategy is probably ever going to be successful completely on its own."

Epidemiologists have also raised concerns about the accuracy of the rapid antigen tests used by the White House: Abbott Laboratories' ID Now.

"Up to half of the people who are infected could test negative by that test," Dr. Michael Osterholm of the University of Minnesota told CNBC. —Hannah Miao

Three Republican senators have tested positive in two days

Senator Ron Johnson, a Republican from Wisconsin, speaks during a Senate Homeland Security and Governmental Affairs Committee hearing in Washington, D.C., U.S., on Thursday, Aug. 6, 2020.
Toni Sandys | Bloomberg | Getty Images

Ron Johnson of Wisconsin is now the third Republican senator to test positive for Covid-19. Johnson's diagnosis comes after Sens. Mike Lee, R-Utah, and Thom Tillis, R-N.C. tested positive for the virus Friday.

It's unclear where the senators contracted the virus, but Lee and Tillis attended the Amy Coney Barrett Supreme Court nomination announcement at the White House last Saturday. The two are both members of the Senate Judiciary Committee, the panel in charge of Barrett's nomination process.

The senators' diagnoses could impact Republicans' race to confirm Barrett before the November election. While the GOP has a 53-47 majority in the chamber, two Republicans, Sens. Susan Collins and Lisa Murkowski, have publicly announced they oppose voting on the nomination before Election Day.

Sen. Lindsey Graham, R-S.C., chair of the Judiciary Committee, said Barrett's confirmation hearing will occur on Oct. 12 as planned, despite calls from Democrats to delay the hearing. —Hannah Miao

Vice President Pence again tests negative

U.S. Vice President Mike Pence (R) and his wife Karen Pence join Trump administration officials on stage after President Donald Trump delivered his acceptance speech for the Republican presidential nomination on the South Lawn of the White House August 27, 2020 in Washington, DC.
Chip Somodevilla | Getty Images

Vice President Mike Pence and second lady Karen Pence again tested negative for the coronavirus Saturday morning, NBC News reported, citing a White House official.

All eyes are on Pence's health since he is next in line for the presidency should President Donald Trump become incapacitated. The vice president, who also tested negative Friday morning, hours after Trump revealed his diagnosis, has been working from his residence at the Naval Observatory.

Several people in Trump's orbit, including first lady Melania Trump and campaign manager Bill Stepien, have tested positive for the virus.

The White House physician is slated to provide an update on Trump's condition at 11 a.m. ET.

Pence is slated to debate his Democratic rival, Sen. Kamala Harris, on Wednesday. The next day, the vice president will travel to Arizona for a campaign event.

– Mike Calia

First Lady 'doing well,' symptoms 'have not worsened'

U.S. First Lady Melania Trump wears a protective mask during the first U.S. presidential debate hosted by Case Western Reserve University and the Cleveland Clinic in Cleveland, Ohio, U.S., on Tuesday, Sept. 29, 2020.
Kevin Dietsch | Bloomberg | Getty Images

First Lady Melania Trump is "doing well," her chief of staff Stephanie Grisham said Saturday.

"Her symptoms have not worsened and she continues to rest," Grisham added. The First Lady is in touch with the president, after he spent Friday night at Walter Reed National Military Medical Center. - Pippa Stevens

Cases grow in more than half of U.S. states

Coronavirus cases were growing by 5% or more, based on a weekly average to smooth out the reporting, in 27 states across the U.S. as of Friday, according to a CNBC analysis of data compiled by Johns Hopkins University. 

Kentucky, Wisconsin, Nebraska and Montana reached record-high averages on Friday. Nationwide, however, newly reported cases averaged around 42,400, a decline of approximately 2.4% compared with a week ago, according to Johns Hopkins. — Noah Higgins-Dunn

Three White House journalists test positive for Covid-19

Three White House journalists have tested positive for Covid-19, the White House Correspondents' Association said in a statement on Friday.

One of the individuals was at the White House briefing the prior Sunday, while a second was part of the out-of-town travel pool for the Pennsylvania trip last Saturday, and began experiencing symptoms on Thursday. The third journalist was a member of the in-town travel pool last Sunday, and was also at last Saturday's Rose Garden for Supreme Court nominee Amy Coney Barrett event. The individual began experience symptoms on Wednesday. 

The White House Correspondents' Association noted that a number of White House journalists are now self-isolating while waiting for test results, and urged those who were at the events over the last week to monitor their health in the coming days.  —Pippa Stevens

Trump took an experimental antibody drug. Here's what we know about the treatment

Experts in the medical community have mixed opinions about the decision to treat President Donald Trump's coronavirus diagnosis with an experimental antibody cocktail from Regeneron Pharmaceuticals, CNBC's Christina Farr and Kevin Stankiewicz reported.

"This was a wholly appropriate decision to give him active therapy, and then it just became a choice of which therapy," former Food and Drug Administration commissioner Dr. Scott Gottlieb told CNBC.

Other doctors had concerns about the president receiving preferential treatment. The antibody drug has not yet been approved by federal regulators and there's still limited data on its impact.

Trump's physician, Dr. Sean Conley, said in a White House memo that the president was given Regeneron's treatment "as a precautionary measure." 

Regeneron's REGN-COV2 treatment is a shot of lab-generated antibodies that aims boost the immune system's defenses by mimicking how the body would defend against a foreign invader like the coronavirus. —Hannah Miao

What we know — and don’t know — about the Trump’s diagnosis so far

Public health experts and doctors told CNBC's Christina Farr their takes on President Donald Trump's Covid-19 diagnosis.

At this point, it's difficult to conclude exactly when Trump was exposed to the coronavirus. One theory is that the president was exposed during the Supreme Court nominee announcement at the White House on Saturday, though experts stress there are no clear answers at this stage.

"I suspect the president could have been infected anytime in the past week," said Dr. Jeremy Faust, an attending physician in the Brigham and Women's Hospital Department of Emergency Medicine. "This virus is really hard to track."

Faust said it usually takes about 48 hours to get a positive test result after being exposed to the virus, though some cases have a shorter turnaround time. In the 48 hours before receiving a positive test result, Trump traveled to Ohio, Minnesota and New Jersey. 

It's still unclear whether Trump could have been infected prior to Tuesday's presidential debate, where he crossed paths with Democratic nominee Joe Biden, though the two kept their distance during the event.

Biden has tested negative for Covid-19 since the news of Trump's diagnosis, but experts say it doesn't mean Biden's in the clear.

The president has several risk factors which could increase the likelihood of experiencing severe symptoms, including his age (74), gender (male) and weight (obese). —Hannah Miao