When you purchase through links on our site , we may earn an affiliate commission . Here ’s how it works .
The coronavirus variance first detected in the U.K. does not appear to have more severe illness or death , or to increase the risk of " long COVID , " compared with other strains , grant to two new studies .
The findings contradict some early research from U.K. health officials that suggested the variant was more deadly .
A member of the ambulance service wearing personal protective equipment is seen leading a patient (unseen) into an ambulance at St Thomas' Hospital in London on 30 November 2024.
However , the studies still found that thevariant , called B.1.1.7 , is more transmissible than the original nervous strain , which agrees with premature research .
" Reassuringly , our findings suggest that , despite being more easily spread out , the variant does not alter the type or duration of symptoms experience , and we believe current vaccines and public health measures are probable to remain effective against it , " Mark Graham , a research fellow at King ’s College London and co - lead source of one of the studies , allege in a statement .
Related:14 coronavirus myth bust by science
B.1.1.7 first emerged in the U.K. in September 2020 and has since distribute around the world . ( It is now the rife variant in the United States , according toThe New York Times . ) Many studies found that the variation was more transmissible ; and in January , U.K. officials enunciate there was some early evidence that the variant was also more mortal , Live Science antecedently reported . However , at that clock time , officials stressed that their information was limited and still uncertain .
In Graham ’s new field of study , published Monday ( April 12 ) in journalThe Lancet Public Health , he and colleagues analyzed entropy from nearly 37,000 people in the U.K. who tested positive for COVID-19 between September and December 2020 and describe symptom via a nomadic app call the COVID Symptom Study app . Then , the researchers mix this selective information with genetic sequencing data from the COVID-19 UK Genetics Consortium and Public Health England , which prove how many COVID-19 instance in a afford orbit were due to B.1.1.7 or other strains .
The researchers receive there was no connexion between the ratio of B.1.1.7 cases in a region and the symptom people experience , even in stead that examine the keen increase in B.1.1.7 cases during the study period , such as London and South East England . There was also no link between the proportion of infections with B.1.1.7 in an orbit and the proportion of people who experiencedlong COVID , which the study fix as symptoms that prevail for more than 28 days .
But the sketch researcher found that B.1.1.7 increased the basic reproductive memory issue , or the intermediate number of people who see the virus from a single infected soul , by 1.35 times , compare with that of the original nervous strain , which is standardised to previous estimates .
In the second work , print Monday in journalThe Lancet Infectious Diseases , researcher analyzed information from 341 COVID-19 patients who were admit to University College London Hospital and North Middlesex University Hospital in the U.K. , between November and December 2020 . Of these affected role , 58 % were infected with the B.1.1.7 variant and 42 % were infect with another strain .
There was no link between the strain and disease severity — in the B.1.1.7 mathematical group , about 20 % of all patients became severely sick and 16 % of all patients died ; and in the non - B.1.1.7 chemical group , 20 % of all patients became severely ill and 17 % of all patients exit .
— 20 of the spoiled epidemic and pandemic in history
— Pfizer ’s COVID-19 vaccine effectual after 6 months and exploit against problem stochastic variable
— Why the coronavirus slipped past disease detective
The findings held after the researchers claim into chronicle factors that could impress disease austereness , including long time , sex and implicit in health condition . The study investigator did find that patients with B.1.1.7 tend to have higher viral lode , or levels of virus in their nose and throats , compared with people infected with other breed , which could play a purpose in the greater transmissibility of B.1.1.7 .
" [ The authors ' ] reflexion that B.1.1.7 infections were link with increase viral loads corroborates findings from two other studies and provide a mechanistic surmise that increased transmissibility is via increase respiratory peeling , " Dr. Sean Wei Xiang Ong , of the National Centre for infective Diseases in Singapore , and colleagues , compose in an column company the study in The Lancet Infectious Diseases .
Both of the written report have limitation . Although The Lancet Public Health study was big , it is based on people ’s ego - account symptom and the investigator could not determine which users were unquestionably infect with B.1.1.7 . For the Lancet Infectious Diseases study , the research worker were able to depend at detailed information such as which puree affected role were infected with , but the subject area was comparatively little and " requires further confirmation in larger studies , " Ong and colleagues publish . In improver , because the cogitation only include hospitalized patients , it can not regulate whether people with B.1.1.7 are more likely to be hospitalized liken with other tenor .
Originally release on Live Science .
