Sunday, January 17, 2021
Home Life Style Health & Fitness Covid-19 Less Likely to be Spread by Asymptomatic Patients: WHO

Covid-19 Less Likely to be Spread by Asymptomatic Patients: WHO

Spread of coronavirus by 'asymptomatic' is less likely to happen

By Sumit Saxena

The spread of Covid-19 by an asymptomatic or someone who is not showing any symptoms appears to be less likely, said WHO in the recently published summary of transmission of Covid-19 including symptomatic, pre-symptomatic and asymptomatic patients as per COVID-19 Information & Resources.

The study acquires special importance as India enters the second week of Unlock1.0, with restaurants, religious places, malls opening up, added to a vast population straying out for morning and evening walks.

Follow NewsGram on Instagram to stay updated.

According to the WHO’s report, “Comprehensive studies on transmission from asymptomatic individuals are difficult to conduct, but the available evidence from contact tracing reported by Member States suggests that asymptomatically-infected individuals are much less likely to transmit the virus than those who develop symptoms.”

Maria Van Kerkhove, the World Health Organization’s technical lead for Covid-19 response in a tweet said “In these data, it is important to breakdown truly asymptomatic vs pre-symptomatic vs mildly symptomatic.

“Also to note that the per cent reported or estimated to be “asymptomatic” is not the same as the per cent that are asymptomatic that actually transmits.”

The WHO said among the available published studies, some have described occurrences of transmission from people who did not have symptoms. For example, among 63 asymptomatically-infected individuals studied in China, there was evidence that 9 (14 per cent) infected another person. Furthermore, among two studies which carefully investigated secondary transmission from cases to contacts, one found no secondary transmission among 91 contacts of 9 asymptomatic cases, while the other reported that 6.4 per cent of cases were attributable to pre-symptomatic transmission.

Some people infected with the COVID-19 virus do not ever develop any symptoms. Pixabay

“The available data, to date, on onward infection from cases without symptoms comes from a limited number of studies with small samples that are subject to possible recall bias and for which fomite transmission cannot be ruled out,” said the WHO.

Some people infected with the COVID-19 virus do not ever develop any symptoms, although they can shed virus which may then be transmitted to others. The WHO said one recent systematic review found that the proportion of asymptomatic cases ranged from 6 to 41 per cent, with a pooled estimate of 16 per cent (12e20), although most studies included in this review have important limitations of poor reporting of symptoms, or did not properly define which symptoms they were investigating. Viable virus has been isolated from specimens of pre-symptomatic and asymptomatic individuals, suggesting, therefore, that people who do not have symptoms may be able to transmit the virus to others, added the WHO.

Also Read: Devotees Offer Prayers as Kashi Vishwanath Temple Reopens

Van Kerkhove in a media briefing reportedly said that from the data examined by WHO, it still seems to be rare that an asymptomatic person actually transmits onward to a secondary individual.

The WHO said that according to the current evidence, COVID-19 virus is primarily transmitted between people via respiratory droplets and contact routes. “Droplet transmission occurs when a person is in close contact (within 1 metre) with an infected person and exposure to potentially infective respiratory droplets occurs, for example, through coughing, sneezing or very close personal contact resulting in the inoculation of entry portals such as the mouth, nose or conjunctivaee. Therefore, transmission of the COVID-19 virus can occur directly by contact with infected people, or indirectly by contact with surfaces in the immediate environment or with objects used on or by the infected person (e.g., stethoscope or thermometer)”, added the transmission study. (IANS)



Most Popular

Hindu Holy Books: The Four Vedas

BY SHWETA PORWAL The Word Veda means wisdom, knowledge, or vision, and it serves to manifest the language of the gods in human speech. Vedas...

Music That is Happening Today is a Mixture of Good and Bad: Neeraj Shridhar

Singer Neeraj Shridhar, who has given multiple indie pop and Bollywood hits, besides remixes, says that when he remixed songs it was to revive...

Latest Study Suggests Digestive Tract Bacteria Affects Severity of COVID infections in The Body

A new study indicates the kind of bacteria found in a person’s digestive tract can affect the severity of coronavirus infections and the body’s...

This Indian Army Officer Has Developed The Country’s First indigenous 9mm ‘Machine Pistol’

Nagpur-based Indian Army officer Lt Col Prasad Bansod has developed the country's first indigenous 9 mm 'Machine Pistol', an official said here on Saturday. Working...

RBI Remains Committed To Take Further Important Measures To Support Economy

Reserve Bank Governor Shaktikanta Das on Saturday said that the central bank (RBI) remains committed to take any further necessary measures to support the...

Know Why WhatsApp Has Deffered its New Data Privacy Policy!

Facing intense criticism worldwide and now a court case in India, WhatsApp has deferred its new data privacy policy and no one will lose...

Films Are Judged Like Political Essays: Sudhir Mishra

Filmmaker Sudhir Mishra feels films these days are judged like political essays, with no regard to the craft of storytelling. "There is a lack of...

A New Plan To Promote Young Emerging Cricketers By Sonu Sood

Actor Sonu Sood is putting his weight behind an initiative to set up a pan-India platform to promote young emerging cricketers. "I always dreamt of...

Recent Comments