When are people with COVID-19 at their most contagious?

  • 📰 MarketWatch
  • ⏱ Reading Time:
  • 112 sec. here
  • 3 min. at publisher
  • 📊 Quality Score:
  • News: 48%
  • Publisher: 97%

United States Headlines News

United States Latest News,United States Headlines

When are people with COVID-19 at their most contagious? Knowing when an infected person can spread coronavirus is just as important as understanding how transmission occurs.

The coronavirus pandemic hit another unwelcome milestone this week as the number of COVID-19 infections hit 20.1 million globally, according to the latest data aggregated by Johns Hopkins University’s Center for Systems Science and Engineering.

One case study of the quarantined Italian town of Vò published in the peer-reviewed journal Nature in June revealed more than 40% of COVID-19 infections had no symptoms. “If we find a certain number of symptomatic people testing positive, we expect the same number of asymptomatic carriers that are much more difficult to identify and isolate,” according to Enrico Lavezzo, a professor in the University of Padua’s department of molecular medicine.

The virus can be detected in people one to three days before their symptom onset, with the highest viral loads around the day of the onset of symptoms, followed by a gradual decline over time. This level of contagiousness appears to be one to two weeks for asymptomatic persons, and up to three weeks or more for patients with mild to moderate disease.

The U.S. COVID-19 death toll could reach nearly 300,000 by Dec. 1, but consistent mask-wearing beginning today could save approximately 70,000 lives, according to the Institute for Health Metrics and Evaluation at the University of Washington’s School of Medicine. California Gov. Gavin Newsom, a Democrat, last month announced a rollback of operations statewide at restaurants as well as bars, zoos, wineries, museums, card rooms and movie theaters. “This is in every county in the state of California, not just those on the watch list,” he said.

“Despite ample warning, the U.S. squandered every possible opportunity to control the coronavirus. And despite its considerable advantages — immense resources, biomedical might, scientific expertise — it floundered,” he wrote in the September issue of The Atlantic. New York City, the onetime U.S. epicenter of the pandemic, was a case study in how some Americans fared better than others and how the virus is transmitted. Black and Latino people were hospitalized at twice the rate of Caucasians during the peak of the crisis, data released in May by the city showed.

President Donald Trump on Saturday bypassed the nation’s lawmakers as he claimed the authority to defer payroll taxes and replace an expired unemployment benefit with a lower amount after negotiations with Congress on a new coronavirus rescue package collapsed.

 

Thank you for your comment. Your comment will be published after being reviewed.
Please try again later.
We have summarized this news so that you can read it quickly. If you are interested in the news, you can read the full text here. Read more:

 /  🏆 3. in US

United States Latest News, United States Headlines

Similar News:You can also read news stories similar to this one that we have collected from other news sources.

U.S. inks $1.5 billion deal with Moderna for 100 million doses of COVID-19 vaccineThe United States has entered an agreement with drugmaker Moderna Inc to acquire 100 million doses of its potential COVID-19 vaccine for around $1.5 billion, the company and White House said on Tuesday. $ABUS you mean! 😂 Seems premature... Someone turned the tint a little too dark on his spray tan today.
Source: Reuters - 🏆 2. / 97 Read more »

In the Wake of COVID-19 Lockdowns, a Troubling Surge in HomicidesKANSAS CITY, Mo. -- It started with an afternoon stop at a gas station. Two customers began exchanging angry stares near the pumps outside -- and no one can explain exactly why.That led to an argument, and it escalated quickly as one of them pulled a gun and they struggled over it, according to police.'There's too many shootings. Please don't do this,' the wife of one of the men pleaded, stepping between them.But by the time the fight was over at the station on Kansas City's East Side late last month, the all-too-familiar crackle of gunfire pierced the humid air, leaving another person dead in what has been an exceedingly bloody summer.The onset of warm weather nearly always brings with it a spike in violent crime, but with much of the country emerging from weeks of lockdown from the coronavirus, the increase this year has been much steeper than usual.Across 20 major cities, the murder rate at the end of June was on average 37% higher than it was at the end of May, according to Richard Rosenfeld, a criminologist at the University of Missouri-St. Louis. The increase over the same period a year ago was just 6%.In few places has the bloodshed been more devastating than in Kansas City, where the city is on pace to shatter its record for homicides in a year. Much of it has involved incidents of random, angry violence like the conflict at the gas station -- disputes between strangers that left someone dead, or killings that simply cannot be explained. They have claimed the lives of a pregnant woman pushing a stroller, a 4-year-old boy asleep in his grandmother's home and a teenage girl sitting in a car.They have also prompted a much-debated intervention from the federal government, an operation named after the 4-year-old Kansas City boy, LeGend Taliferro, that has sent federal law enforcement agents to at least six cities in an attempt to intervene.'We're surrounded by murder, and it's almost like your number is up,' said Erica Mosby, whose niece, Diamon Eichelburger, 20, thanks to fearmongering by leftist propaganda rags like yahoo The fallout from our CV19 response is beyond words. Belarus, India, China, Hong Kong... famines throughout the world, dictators empowered by the CV19 response to imprison, torture & kill, the Turks incursion into the Mediterranean, elections subverted & this is only the beginning
Source: YahooNews - 🏆 380. / 59 Read more »

Surf And Turf Has Become More Accessible Than Ever, Thanks To COVID-19Looking for restaurant-grade lobster, steak or lamb? It's more available now than ever, sometimes at lower prices, because of restaurant shutdowns. Obviously... Yeah. And probably the fact a lot of people can’t afford to eat that stuff right now.
Source: HuffPostWomen - 🏆 27. / 68 Read more »

Big Ten, Pac-12 Pull Plug on Fall Football Amid COVID-19 ConcernsAbout an hour after the Big Ten's announcement, the Pac-12 called a news conference to say its season would be postponed until the spring.
Source: THR - 🏆 411. / 53 Read more »

Arlan Hamilton’s Four Tips For How Founders Can Navigate The Ongoing Covid-19 CrisisArlan Hamilton built a VC firm from scratch and is backed by impressive investors like Mark Cuban. Here are her four tips for navigating the ongoing COVID-19 crisis.
Source: ForbesWomen - 🏆 477. / 51 Read more »