Only half of participants who were exposed to the coronavirus developed infections, most with mild symptoms.
Study participants reported symptoms typical of other respiratory infections, such as runny noses and sore throats. Fevers were less common.Healthy, young people who were intentionally exposed to the coronavirus SARS-CoV-2 developed mild symptoms — if any — in a first-of-its-kind COVID-19 human-challenge study. Such trials present a unique opportunity to study viral infections in detail from start to finish, but are controversial because of the risks they pose to participants.
However, some researchers question whether the insights yielded by the study so far are important enough to justify the risks to participants, such as the potential for long-term side effects. “In my mind, it’s still not entirely clear whether these studies are ethically justified, and I’m waiting to see what else they’ve found,” says Seema Shah, a bioethicist at Northwestern University in Chicago, Illinois.
The most common symptoms were typical of other respiratory infections: sore throats, runny noses and sneezing. Fever was less common, and no one developed the persistent cough that had been used as a hallmark of COVID-19, says Catchpole. Around 70% of infected participants lost their senses of smell or taste — another COVID-19 signature — to varying degrees. Such problems persisted for more than six months in five participants and more than nine months in one.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
The COVID Vaccine Doesn't Affect Fertility, but COVID Itself DoesCOVID-19 temporarily reduces male fertility by 18%, but the vaccine has no lasting effect on fertility in men or women, a study found.
Les mer »
South African scientists copy Moderna’s COVID vaccineResearchers at WHO’s technology transfer hub complete first step in a project aimed at building capacity for vaccine manufacturing in low- and middle-income countries.
Les mer »
Scientists Deliberately Infected People With Covid-19: Here's What Happened to ThemThe findings might show that people become sick sooner after infection than we thought, and remain infectious more than a week later.
Les mer »
'I was coming to bury my son': 26-year-old wins COVID battle after 5 monthsA healthy 26-year-old, Fabian Granado thought he was 'invincible.' Then, COVID almost took his life.
Les mer »
Schools scramble for volunteers as COVID hampers staffingGovernors have been issuing executive orders to make more people eligible to work in schools. In states including California, Connecticut, New Jersey and Pennsylvania, governors have taken action t…
Les mer »
‘Large portion’ of Alaska House lawmakers exposed to COVID-19The Alaska House canceled a floor session Wednesday due to worries about COVID-19. Through an aide, Speaker of the House Louise Stutes said a “large portion of representatives have been exposed to COVID-19 in the last 24 hours.
Les mer »