Home Health News The Viral Loads of Asymptomatic Coronavirus Carriers Are Surprisingly High, Study Reveals – ScienceAlert

The Viral Loads of Asymptomatic Coronavirus Carriers Are Surprisingly High, Study Reveals – ScienceAlert

3 min read

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.

© Agence France-Presse

Let’s block ads! (Why?)

Source link


  1. web hosting providers

    August 10, 2020 at 6:18 pm

    This paragraph offers clear idea in support of the new
    viewers of blogging, that truly how to do blogging.


  2. content hosting

    August 10, 2020 at 11:36 pm

    Remarkable! Its in fact amazing article, I have got much clear idea about from this article.


  3. adreamoftrains webhosting

    August 12, 2020 at 3:12 am

    It’s really very complicated in this full of activity life to listen news on TV, thus I just use internet for that purpose, and take the most recent news.
    adreamoftrains website hosting companies


  4. cheap flights

    August 24, 2020 at 7:06 pm

    I like what you guys tend to be up too. This kind of clever work and exposure!
    Keep up the great works guys I’ve incorporated you guys to blogroll.
    2CSYEon cheap flights


Leave a Reply

Your email address will not be published. Required fields are marked *

Check Also

COVID-19 Statistics | Sept. 18, 2020 – Lost Coast Outpost

Humboldt County’s confirmed COVID-19 case count remains at 482 as no additional cases were…