Covid-19 Live Updates: The latest news and analysis

Hopefully on home tests as often as possible, experts call the idea a long shot.

Over the past few weeks, Harvard scientists have made headlines for a bold idea to stop the spread of coronavirus: to roll out antigen tests, Decades old Millions of Americans enter testing technology for everyday, home use.

The tests Not very good at picking low-level infections. But it is cheap and convenient and gives results in minutes. Real-time information, Argued Dr. Michael. Michael Meena, a Harvard scientist, would be much better than that Long delay The test pipeline is filled.

A quick and frequent approach to testing has attracted attention Scientists And journalists from around the world, and that High officials In the Department of Health and Human Services.

But more than a dozen experts said the ubiquitous ubiquitous antigen testing, while Interesting in theory, May not be effective in practice. In addition to tackling huge rational hurdles, they said, the plan relies on compliance by people who are increasingly confused by extensive buy-in and coronavirus testing. The goal also assumes quick tests Their purpose can achieve the purpose.

“We’re moving forward with new ways to control this epidemic,” said Asher Babadi, director of clinical microbiology services at the Memorial Sloan Kettering Cancer Center in New York. But he said antigen tests that can work at home have not yet entered the market.

Also, no rigorous study has shown that it is better to test faster and more frequently than sensitive but slow in the real world, he said. “The data for it is what is missing.”

The director of the Infectious Diseases Diagnostic Laboratory at Boston Children’s Hospital and one of the authors, Dr. “The approach that has been put forward is” largely ambitious, and we need to examine it against reality, “said Alexander Ndermakadem. Recent report on epidemiological testing strategies In the Journal of Clinical Microbiology.

To date most coronavirus tests rely on a laboratory technique called PCR, which has long been considered the gold standard because it can select even small amounts of genetic material from microorganisms such as coronavirus.

But efforts to collect, ship and process samples for PCR tests by the sputtering supply chain have been tampered with, prolonging turnaround time. And the longer the wait, the less useful the result.

Thousands of Hong Kong police officers filled the streets of Hong Kong on Sunday, protesting the postponement of assembly elections because of the epidemic and the imposition of a national security law by China that gives the authorities a chance. Implementing new powers to move critics forward.

A large police presence was seen around the Kowloon Peninsula, where some activists called for a march on the day the election was to begin, despite social distance rules, which prohibited gathering of people. However, occasional pro-democracy mantras erupted as small groups were injured in the side streets, with fewer protesters than the large crowd gathered last year.

While Hong Kong has seen an increase in coronavirus cases in the past month, recent waves have largely come under control. A week after the daily average in one or less double digits, the city announced 21 new cases on Sunday.

The Hong Kong government, with the help of a team from mainland China, launched a universal testing program last week that said it was necessary to break the hidden chains of virus transmission. Some activists and healthcare activists urged residents to boycott the plan, calling it a waste of resources motivated by political will to burn China’s central government’s image.

The first batch of 128,000 tested at the program found six positive cases, including four people with previously confirmed cases, who were treated in hospitals, health officials said Thursday. Five more cases were announced through the program on Sunday. About 10 million people in the city of 7.5 million have registered for the tests.

For many Americans, Labor Day is a summer farewell before children return to school and the cold weather arrives. But public health experts worry that amid the epidemic, there will be devastation this fall.

On Memorial Day and the weekend of July, the people of Covid-19 moved around the United States, after having family gatherings or gathering in large groups.

The country’s top infectious disease specialist Dr. Anthony S. Fawcett said he wanted people to enjoy Labor Day weekend, but cautioned to avoid the post-holiday spike in the circumstances: have fun outside; Avoid crowds, and keep gatherings of 10 people or less; And also outside, wear a mask and study physical distance if you spend time with people outside your home.

“We’ll see what happens over the weekend, and we want to make sure we don’t have too fast,” said Dr. Fawcett.

In terms of daily case counts, going to Labor Day weekend is worse than United States Memorial Day weekend. The nation now has about 40,000 new confirming cases per day, up from about 22,000 before Memorial Day weekend.

“As the number of infections increases after Labor Day, it will be more difficult for people to control the spread of coronavirus in the fall when they go indoors,” said Dr Fauki.

Public health experts said it is more challenging to persuade people to reduce their Labor Day weekend plans than the previous holiday weekend, as many people experience epidemic fatigue after six months of closures, closures and separations.

“People are tired of taking these precautions and risking their lives.” Eleanor J. Murray, Assistant Professor of Epidemiology at Boston University School of Public Health. “They are missing their friends and family, and everyone wants things to go normally. That’s totally understandable, but unfortunately, we don’t really get to say it. “

Although she is one of the most trusted confidants of President Andr્રેસs Manuel Lપેpez Obrador, she was careful to keep her distance from him whenever possible when the virus came. Mr. Lopez Obrador questioned the science behind facial masks and minimized the epidemic at the beginning of doing a little testing. To avoid economic hardship, he has strictly banned travel.

Under his supervision, Mexico has the fourth highest mortality rate worldwide from coronavirus.

As of Saturday, 67,326 coronavirus deaths had been reported in Mexico, according to the report Times Database. But the health ministry also said that 122,765 more deaths than usual had been reported in the country since the epidemic began in August, indicating that the exact figure could be higher than reported.

While Mr. López Obrador was still kissing children at rallies and comparing the virus to the flu, Mrs. Shenbum was thinking for a long epidemic. She spearheaded an aggressive testing and contact tracing campaign, and set up a test kiosk where people can get free.

Everyone in Mexico City should use face masks on public transport and wear a mask whenever he addresses the news media. And when doctors told him that the N95 mask, imported from China by the federal government, was too narrow to fit the Mexican face, he converted the local factory into a mask-making operation.

For Mr. Sheenbaum, the Ph.D. With scientist. In energy engineering, aligning closely with the president means that it is in the best interest of public health to ignore the practices she knows. Wandering too far, and she risks losing the support of a political kingmaker who is said to be – the first woman elected to head the country’s capital and the first Jewish person – as the party’s next presidential candidate.

Yet, while refusing to criticize the President, his strategy has been to follow science.

Other coronavirus news from around the world:

• India On Sunday, 90,632 new coronavirus cases were reported, a world record. Coronavirus outbreak in India, with an estimated four million cases Times DatabaseIs, is Ruined the economy That was a recent boom.

• MelbourneAustralia, Australia’s second-largest city, on Sunday extended its lockdown to at least September 28. The epicenter of Australia’s worst outbreak, the state of Victoria, has been under lockdown since early August.

The virus is spreading around the college campus as students return.

Within days of the University of Iowa reopening, students were complaining that they could not give coronavirus tests or hitting gaps in people who believed in loneliness. Undergraduates The sidewalks were jammed And Downtown Bar, Masks hanging under their chins, never mind the city’s mask command.

Now, Iowa City is a fully fledged epidemic hot spot – one of about 100 college college communities around the United States where the infection has spread in recent weeks as students return to the fall semester. Yet the rate of infection has turned downward in the Northeast, where U.S. The virus was in the first place, but it is high in many states in the Midwest and the South – and evidence suggests that students returning to large campuses are a major factor.

In a New York Times review of 203 U.S. counties where students make up at least 10 percent of the population, nearly half have experienced the worst weeks of the epidemic with Gust. In half of them, statistics show that new numbers of infections are currently at their peak.

Despite the surge in cases, there has been no increase in deaths in college college communities, the data show. This suggests that most infections originate from campus, as young people who are infected with the virus die more than older people.

However, leaders fear that infected young people will contribute to the spread of the virus throughout the community.

The increase in infections reported by the county health department is due to the fact that many college-led administrations are also announcing clusters on their campuses. The potential for the virus to spread beyond Campus Greens has deeply affected workplaces, schools, governments and other local community organizations.

The tensions between the traditional town and the robe often escalate as college-led cities try to strike a balance. Economic dependence On the dreaded universities with international health.

Across the world, including some of the world’s richest countries, educators are struggling to figure out how to facilitate distance learning during epidemics. But in poor countries like Indonesia, this challenge is particularly difficult.

In North Sumatra, students climb a tall tree one mile from their mountain village. The branches above the ground bent over the tall branches, they expect a strong enough cellphone signal to complete their assignments.

The journey of these students and others like them has become a symbol of the hardships faced by millions of school children in the Indonesian archipelago. Officials have closed schools and brought in remote learning, but internet and cellphone service is limited and many students do not have smartphones and computers.

According to the Ministry of Education, more than a third of Indonesian students have limited or no access to the Internet, and experts fear that many students will fall far behind, especially in remote areas where study online study will be an innovation.

Indonesia’s efforts to slow the spread of coronavirus have met with mixed results. As of Saturday, there were 190,665 cases in the country and 7,940 people had died. But testing has been limited and independent health experts say the actual number of cases is many times higher.

With the start of the new academic year in July, virus-free zone schools were allowed to reopen, but these schools give only a fraction of the country’s students. By August Gust, communities in low-risk areas will be able to decide whether to reopen schools, but few have done so.

“Students have no idea what to do, and parents think it’s just a holiday,” said Itje Chodidja, an education officer and teacher trainer in the capital Jakarta. “We still have a lot of areas where the internet is not used. In some areas, it is also difficult to get electricity. “

Reporting includes Robert Gabloff, Shawn Hubbler, Daniel Ivory, Jennifer Jett, Natalie Kitroff, Sarah Cliff, Tiffany May, Dera Menra Sijabat, Richard C. Paddock, Tara Parker-Pop, in Stin Ramsay, Sarah Watson and Catherine J. Wu contributed.