London: One in 10 people may still be infectious and can potentially spread the Covid virus even after the 10 day quarantine period, according to new research.
The study, led by the University of Exeter in the UK, used a newly-adapted test which can detect whether the virus was potentially still active. It was applied to samples from 176 people in Exeter who had tested positive on standard PCR tests.
The study, published in the international Journal of Infectious Diseases, found that 13 percent of people still exhibited clinically-relevant levels of virus after 10 days, meaning they could potentially still be infectious.
Some people retained these levels for up to 68 days or more than two months. The team believe this new test should be applied in settings where people are vulnerable, to stop the spread of Covid-19.
“While this is a relatively small study, our results suggest that potentially active viruses may sometimes persist beyond a 10 day period, and could pose a potential risk of onward transmission. Furthermore, there was nothing clinically remarkable about these people, which means we wouldn’t be able to predict who they are,” said Professor Lorna Harries, of the University of Exeter Medical School.
Conventional PCR tests work by testing for the presence of viral fragments. While they can tell if someone has recently had the virus, they cannot detect whether it is still active, and the person is infectious.
The test used in the latest study however gives a positive result only when the virus is active and potentially capable of onward transmission.
“In some settings, such as people returning to care homes after illness, people continuing to be infectious after ten days could pose a serious public health risk. We may need to ensure people in those settings have a negative active virus test to ensure people are no longer infectious. We now want to conduct larger trials to investigate this further,a said lead author Merlin Davies, from the varsity.
function pauseEvent(event) {
var videotype = "zee english video";
gtag('event', 'Pause', { 'event_category': videotype, 'event_label': vlabel});
}
function AdloadEvent(event) {
var videotype = "zee english video";
gtag("event", "kaltura_adloaded", { "event_category": videotype, "event_label": vlabel});
}
function AdProgressEvent(event) {
var videotype = "zee english video";
gtag("event", "kaltura_adprogress", { "event_category": videotype, "event_label": vlabel});
}
function adPausedEvent(event) {
var videotype = "zee english video";
gtag("event", "kaltura_adpaused", { "event_category": videotype, "event_label": vlabel});
}
/* End of Kaltura player function code */
$(document).delegate("div[id^='play']", "click", function(){
//console.log($(this).attr("id"));
//console.log($(this).attr("video-source"));
//console.log($(this).attr("video-code"));
var isyoutube = $(this).attr("video-source");
var vurl = $(this).attr("video-path");
var vid = $(this).attr("id");
$(this).hide();
var pvid = $(this).attr("newsid");
var vx = $(this).attr("id").replace('play-','');
var vC = $(this).attr("video-code");
var playDiv = "video-" + vid + "-" + pvid;
if(isyoutube =='No'){
kalturaPlayerAPIReady(vC, playDiv,pvid);
}else{
onYouTubePlay(vid, vC, playDiv,vx, pvid);
}
});
$(document).delegate("div[id^='ptop']", "click", function(){
var vid = $(this).attr("id").replace('ptop','');
$(this).hide();
var pvid = $(this).attr("newsid");
var vurl = $(this).attr("video-path");
//console.log($(this).attr("id") + "--" + vid);
//console.log($(this).parent().children().find('#play-'+vid).attr("video-source"));
//console.log($(this).parent().children().find('#play-'+vid).attr("video-code"));
var isyoutube = $(this).parent().children().find('#play-'+vid).attr("video-source");
var vC = $(this).parent().children().find('#play-'+vid).attr("video-code");
var playDiv = "mvideo-play-" + vid + "-" + pvid;
if(isyoutube =='No'){
//console.log(jwplayer($(this).attr("id")).getState());
kalturaPlayerAPIReady(vC, playDiv,pvid);
var nxti = 3;
var ci = 1;
var nxti_1 = 6;
var nxti_2 = 9;
var nxti_3 = 12;
if($.autopager==false){
var use_ajax = false;
/*var disqus_shortname="zeehindi";
var disqus_identifier; //made of post id and guid
var disqus_url; //post permalink
function loadDisqus(source, identifier, url, nid) {
if (window.DISQUS) {
//alert("if");
jQuery('
').insertAfter(source);
jQuery('#disqus_thread').insertAfter(source); //append the HTML after the link
//if Disqus exists, call it's reset method with new parameters
DISQUS.reset({
reload: true,
config: function () {
this.page.identifier = identifier;
this.page.url = url;
}
});
}else{
jQuery('
').insertAfter(source);
disqus_identifier = identifier; //set the identifier argument
disqus_url = url; //set the permalink argument
Health Tips in Hindi: इन दिनों काफी लोग अपने बालों के सफेद होने और झड़ने की समस्या से परेशान है. काफी कम उम्र में भी लोगों को बाल सफेद होने की समस्या का सामना करना पड़ रहा है. जिसके लिए वे कई प्रकार के घरेलू नुस्खे भी अपना रहे हैं लेकिन उन्हें कोई लाभ मिलता […]
Coronavirus: देश में कोरोना की वजह से हर कोई परेशान है. लोग तेजी से नए वैरिएंट ओमिक्रोन (Omicron variant) की चपेट में आ रहे हैं. इससे बचाव के लिए कई तरह की पाबंदियां लगाई गई हैं लेकिन खुद को इस वायरस (Virus) से दूर रखने के लिए और भी कई तरह की सावधानी बरतनी जरूरी […]
Coronavirus Case: कोरोना की तीसरी लहर ने एक बार फिर लोगों के मन में भय बनाना शुरू कर दिया है. इन दिनों देशभर में कोरोना के केस तीन लाख के पार पहुंच गए हैं. इसी बीच कोरोना के नए वेरिएंट ओमिक्रोन के मामले भी काफी तेजी से निकल रहे हैं. जो कि वैक्सीनेटेड लोगों को […]
