Vaccines Cut Delta Transmission But Not for Long
October 6, 2021| |
A study conducted by the University of Oxford scientists confirms that COVID vaccines can decrease the risk of passing on the Delta variant to their unvaccinated close contacts. However, this protection dwindles alarmingly at three months after the second shot was administered.
The study further examines the effect of vaccines on the transmission of Alpha and Delta variants. The researchers found that although the vaccines offer some protection against infection and transmission, the Delta variant can decrease that protection. A fully vaccinated person who contracted a Delta infection was twice as likely to transmit the virus as someone who was infected with Alpha. This is on top of the higher risk of having a breakthrough infection from the Delta variant than one caused by Alpha.
The results possibly explain why there is an ongoing fast transmission of the Delta variant despite massive vaccination programs.
Read more from Nature.
| |
You might also like:
- ISAAA COVID-19 Resource
- UC San Diego Nanoengineers Develop Fridge-Free COVID-19 Vaccines Grown in Plants and Bacteria
- Experts Review Potential of Plant-Based Edible Vaccines
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
-
See more articles:
-
News from Around the World
- Nobel Prize in Physics 2021 Goes to Three Laureates for Climate Work
- "Scientific Consensus" Counters False Beliefs on GM Foods, Study
- USDA Deregulates Corn for Phytase Production Developed Using Genetic Engineering
- Calyxt to Develop Better Soybean Oil as Palm Oil Alternative
- Australian OGTR Receives License Application for GM Wheat and Barley Field Trial
- UK Government Gets Support of Scientists After Decision To Ease Gene Editing Rules
- Genetic Engineering and Beetroot Dye Tomatoes Purple
-
Research Highlights
- Researchers Discuss Transporters and Transcription Factors Involved in Rice NUE
- Improving Plant Growth and Biomass by GA20ox Overexpression
- GE Canola That Produces DHA Passes Food and Feed Safety Study
-
Plant
- Study Reveals Role of OsFtsH2 in Chloroplast Development in Rice
-
Health
- Vaccines Cut Delta Transmission But Not for Long
-
Read the latest: - Biotech Updates (July 9, 2025)
- Gene Editing Supplement (June 25, 2025)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet