Create profile
EN



Covid: Double vaccinated can still spread virus at home
Source: Writer:CODEX Date:2021-09-20 View: 4202

A medical personnel prepares a syringe with a coronavirus disease (COVID-19) vaccine, in a doctor's office in Berlin, Germany, November 2, 2021. REUTERS/Hannibal Hanschke


Double jabbed people are catching Covid and passing it on to those they live with, warn experts who have studied UK household cases.

Individuals who have had two vaccine doses can be just as infectious as those who have not been jabbed.

Even if they have no or few symptoms, the chance of them transmitting the virus to other unvaccinated housemates is about two in five, or 38%.

This drops to one in four, or 25%, if housemates are also fully vaccinated.

The Lancet Infectious Diseases work shows why getting even more people vaccinated is important.

Unvaccinated people cannot rely on those around them being jabbed to remove their risk of getting infected, they warn.

Vaccines do an excellent job of preventing serious Covid illness and deaths, but are less good at stopping infections, particularly since the emergence of the more infectious Delta variant.

And over time, the protection offered by vaccines wanes and needs boosting with further doses.

Since households are where most Covid transmission occurs, making sure every member who is eligible for a vaccine has had one and is up to date with their doses makes sense, say experts.

According to the study, which ran from September 2020 to September 2021 and included 440 households in London and Bolton doing PCR Covid tests:

People who are double jabbed have a lower, but still appreciable, risk of becoming infected with the Delta variant compared with unvaccinated people

They also appear to be just as infectious

Vaccinated people clear the infection more quickly, but their peak viral load - when people are most infectious - is similar to that seen in unvaccinated people

This may explain why they can still readily pass on the virus in household settings.

Prof Ajit Lalvani, of Imperial College London, UK, who co-led the study, said: "The ongoing transmission we are seeing between vaccinated people makes it essential for unvaccinated people to get vaccinated to protect themselves from acquiring infection and severe Covid-19, especially as more people will be spending time inside in close proximity during the winter months.

"We found that susceptibility to infection increased already within a few months after the second vaccine dose - so those eligible for booster shots should get them promptly."

Co-author Dr Anika Singanayagam, also from Imperial, said: "Our findings provide important insights into the effect of vaccination in the face of new variants, and specifically, why the Delta variant is continuing to cause high Covid case numbers around the world, even in countries with high vaccination rates.

Covid: Double vaccinated can still spread virus at home
Source: Writer:CODEX Date:2021-09-20 Views: 4202 次

A medical personnel prepares a syringe with a coronavirus disease (COVID-19) vaccine, in a doctor's office in Berlin, Germany, November 2, 2021. REUTERS/Hannibal Hanschke


Double jabbed people are catching Covid and passing it on to those they live with, warn experts who have studied UK household cases.

Individuals who have had two vaccine doses can be just as infectious as those who have not been jabbed.

Even if they have no or few symptoms, the chance of them transmitting the virus to other unvaccinated housemates is about two in five, or 38%.

This drops to one in four, or 25%, if housemates are also fully vaccinated.

The Lancet Infectious Diseases work shows why getting even more people vaccinated is important.

Unvaccinated people cannot rely on those around them being jabbed to remove their risk of getting infected, they warn.

Vaccines do an excellent job of preventing serious Covid illness and deaths, but are less good at stopping infections, particularly since the emergence of the more infectious Delta variant.

And over time, the protection offered by vaccines wanes and needs boosting with further doses.

Since households are where most Covid transmission occurs, making sure every member who is eligible for a vaccine has had one and is up to date with their doses makes sense, say experts.

According to the study, which ran from September 2020 to September 2021 and included 440 households in London and Bolton doing PCR Covid tests:

People who are double jabbed have a lower, but still appreciable, risk of becoming infected with the Delta variant compared with unvaccinated people

They also appear to be just as infectious

Vaccinated people clear the infection more quickly, but their peak viral load - when people are most infectious - is similar to that seen in unvaccinated people

This may explain why they can still readily pass on the virus in household settings.

Prof Ajit Lalvani, of Imperial College London, UK, who co-led the study, said: "The ongoing transmission we are seeing between vaccinated people makes it essential for unvaccinated people to get vaccinated to protect themselves from acquiring infection and severe Covid-19, especially as more people will be spending time inside in close proximity during the winter months.

"We found that susceptibility to infection increased already within a few months after the second vaccine dose - so those eligible for booster shots should get them promptly."

Co-author Dr Anika Singanayagam, also from Imperial, said: "Our findings provide important insights into the effect of vaccination in the face of new variants, and specifically, why the Delta variant is continuing to cause high Covid case numbers around the world, even in countries with high vaccination rates.

Our Advantages
Sixteen years of translation experience in medical and intellectual property fields
Sixteen years of translation experience in medical and intellectual property fields
Since the establishment, CODEX Translation has been deeply engaged in medical translation. Quality translation and services are the driving force for our sustainable development.
Professional and Elite Team
Professional and Elite Team
The translation team consists of graduates returned from abroad, post-graduate students from the most prestigious universities, professional native-speaking translators and consultants in the medical industry.
Authoritative Quality Certification
Authoritative Quality Certification
We provide services for many world-renowned pharmaceutical companies with ISO17100:2015,ISO18587:2017, ISO9001:2015, ISO14001:2015, ISO 13485:2016 Quality Management System Certification.
Strict Control Process
Strict Control Process
Codex Translation has established a perfect translation quality assurance system and systematic operation process, strictly adopts the working procedure of  “firstly translation, secondly modification, thirdly proofreading and fourthly review”.
Excellent Staff Quality
Excellent Staff Quality
Being strictly examined and selected, every one of us is characterized with a strong sense of responsibility and proficiency in medical translation , and we strictly follow the confidential system.
Client Support
Client Support
“Pursue Excellence, Strive for Perfection”. Serve you with quality and confidentiality .
Contact Us
CODEX By Your Side

Beijing CODEX Translation Co.,LTD

400-136-8786

We Are Here For You 24/7
Who We Are
As one of the few medical translation suppliers in China that have been certified by ISO17100: 2015, we have been providing life sciences translation services, localization services and intellectual property translation services since our founding 16 years ago.
Open a membership
Send a verification code
Sign up
Already have an account? Sign in here
Use your account
Use your message
Login
Do not have an account? Sign up here
Send a verification code
Login
Do not have an account? Sign up here
Scan QR code
CODEX WeChat Public Platform
WeChat
CODEX customer service
Contact Us
400-136-8786
E-mail
Info@codex-trans.com