“The combination of the two factors makes Biden a close contact, even if the letter of the law doesn’t consider him one,” Dr. Marr stated.
Mr. Biden examined unfavorable for the virus twice on Friday, the Biden marketing campaign stated. He was not examined on Saturday and left his residence for a part of the day, going to a theater to take part in a digital occasion and a church to attend Mass. The marketing campaign introduced his newest unfavorable check end result on Sunday night time. Pressed on CNN concerning the frequency of Mr. Biden’s coronavirus assessments, Ms. Sanders stated the candidate was “tested before we travel.”
In the approaching days, the Biden marketing campaign is aiming to steadiness well being precautions with continued journey in Florida on Monday and in Arizona on Thursday. Yet Mr. Trump’s constructive check has plainly injected a unprecedented measure of uncertainty into the race.
“We only have a few weeks left to the election, and they want Joe Biden to have the ability to present himself to the American public,” Dr. Redlener stated. “And the president’s recklessness has thrown things off track, and the Biden campaign is frustrated by that.”
But no matter his journey schedule, Mr. Biden ought to be examined every single day at the least till Oct. 13, two weeks from the night time of the controversy, and possibly even after that given his interactions with folks on the marketing campaign path, specialists stated.
“Getting a negative test does not necessarily mean that you’re not infected,” stated Juliet Morrison, a virologist on the University of California, Riverside. Early within the an infection, the quantity of the virus could also be too low to set off a constructive end result. “You have to keep being diligent, and assuming that you may have actually been infected, so you need to be testing on a daily basis,” she stated.
A fast check just like the one utilized by the White House can miss infections, particularly early on in the midst of the sickness. Mr. Biden ought to as a substitute be given the extra rigorous P.C.R. check, which might ship leads to a couple of hours when not delayed by bureaucratic logjams, stated Virginia Pitzer, an epidemiologist on the Yale School of Public Health.
Mr. Biden’s marketing campaign ought to make the outcomes of these assessments public as quickly as they’re accessible, she stated: “Transparency is key.”
Thomas Kaplan reported from Washington, and Apoorva Mandavilli and Katie Glueck from New York. Sydney Ember contributed reporting from Connecticut.