Asymptomatic coronavirus carriers have high viral loads: study
This undated handout image obtained July 28, 2020, courtesy of National Institute of Allergy and Infectious Diseases(NIH/NIAID), shows a colorized scanning electron micrograph of a cell (blue) heavily infected with SARS-CoV-2 virus particles (red), isolated from a patient sample.
AFP/US National Institute of Allergy and Infectious Diseases
Asymptomatic coronavirus carriers have high viral loads: study
(Agence France-Presse) - August 7, 2020 - 7:46am

WASHINGTON, United States — People who are infected with the coronavirus carry similar levels of the pathogen in their nose, throat and lungs whether they have symptoms or not, a new study from South Korea showed Thursday.

The paper, published in JAMA Internal Medicine, is an important biological line of evidence in support of the idea that asymptomatic carriers can spread COVID-19.

Until now, experts have relied on inferring asymptomatic spread when people contract the virus without contact with a known carrier.

A team of researchers led by Seungjae Lee at Soonchunhyang University College of Medicine analyzed swabs taken between March 6 and March 26 from 303 people isolated at a center in Cheonan, following an outbreak among a religious group in another city.

The group ranged in age from 22 to 36 and two-thirds were women. Of the total, 193 were symptomatic and 110 were asymptomatic.

Among those who were initially asymptomatic, 89 never developed symptoms at all -- about 30 percent of the total.

This finding itself helps gives a sense of what portion of infected people are truly asymptomatic rather than merely "presymptomatic," a subject of confusion.

All were sampled at regular intervals after day eight of isolation, and the samples returned comparable values of the virus' genetic material from the upper and lower airways.

The median time taken for the patients to return negative tests was marginally less for asymptomatic patients compared with symptomatic: 17 and 19.5 days, respectively.

The authors wrote their findings "offer biological plausibility" to reports of asymptomatic transmission.

But they added that their study only looked at the amount of viral genetic material present and did not attempt to follow the subjects to see if that translated to the spread of infectious virus.

ASYMPTOMATIC NOVEL CORONAVIRUS
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LATEST UPDATE: November 26, 2020 - 5:37pm

Follow this page for updates on a mysterious pneumonia outbreak that has struck dozens of people in China.

November 26, 2020 - 5:37pm

Russia on Thursday registered record numbers for daily infections and deaths from the coronavirus for the second time in less than a week. 

Health officials reported 25,487 new infections, bringing the national total to 2,187,990 cases since the beginning of the pandemic — the fifth-highest caseload in the world.

Health authorities also reported 524 deaths, raising Russia's total fatalities from COVID-19 to 38,062. — AFP

November 26, 2020 - 2:14pm

South Korea reported its highest daily number of coronavirus cases since March on Thursday, with a surge of new infections sparking fears of a major third wave.

Officials announced 583 new cases after several weeks of fresh infections ranging between around 100 and 300.

The latest cases have mostly been clusters at offices, schools, gyms and small gatherings in the greater Seoul area, the Korea Disease Control and Prevention Agency said.

New infections also emerged within the military, including dozens of newly enlisted soldiers at a boot camp — prompting the defense ministry to bolster its virus measures. — AFP

November 26, 2020 - 1:29pm

South Korea reported its highest daily number of coronavirus cases since March on Thursday, with a surge of new infections sparking fears of a major third wave.

Officials announced 583 new cases after several weeks of fresh infections ranging between around 100 and 300.

The latest cases have mostly been clusters at offices, schools, gyms and small gatherings in the greater Seoul area, the Korea Disease Control and Prevention Agency said. — AFP

November 26, 2020 - 8:31am

The coronavirus pandemic is no excuse for not getting enough exercise, the World Health Organization says Wednesday, warning that even before the crisis many were getting too little physical activity. 

In an update of its physical activity guidelines, the UN health agency stressed that exercise was vital to physical and mental health, while sedentary behaviour can have serious repercussions.

"WHO urges everyone to continue to stay active through the Covid-19 pandemic," the agency's head of health promotion Ruediger Krech told reporters.

"If we do not remain active, we run the risk of creating another pandemic of ill-health as a result of sedentary behavior." — AFP

November 25, 2020 - 8:29pm

The coronavirus crisis has hit Italy's already historically-low birth rate, new projections from the national statistics agency reveal. 

Italy had last year already recorded its lowest number of births for 150 years, at 420,000, but this could fall to 408,000 in 2020 and 393,000 in 2021, according to Istat.

The projections were presented by Istat chief, Gian Carlo Blangiardo, to lawmakers on Tuesday.

"The climate of fear and uncertainty as well as financial difficulties... caused by recent events will have a negative effect on the fertility of Italian couples," he said. — AFP

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