How long will protective antibodies generated by a vaccine likely work?

antibodies covid teaser
Credit: Roche

Only a handful of vaccines generate lifetime immunity for most people, such as the ones for measles, a viral infection that naturally produces lifelong immunity. Experts caution against expectations of such longevity for Covid-19, citing experience with other respiratory viruses plus emerging data on the longevity of the antibodies that can prevent the virus from entering human cells and replicating.

To fill in knowledge gaps on vaccine duration, researchers and vaccine developers are looking closely at emerging science of immune responses in recovered patients, and how that science can be applied to vaccine development.

Follow the latest news and policy debates on agricultural biotech and biomedicine? Subscribe to our newsletter.

The first Covid-19 vaccine study is expected to be completed in the fall, but scientists don’t have the luxury to wait until the science is settled, or at least better understood. An emergency authorization by regulators could come before duration is known. Trials are progressing as natural-immunity studies are rapidly pouring in from labs onto online servers and the pages of scientific journals.

Related article:  $1,000 a shot: Fake Pfizer COVID vaccines available globally as desperation grows in countries without access

Francis Collins, director of the National Institutes of Health, said it would be hard to know whether a Covid-19 vaccine protects for a year after testing it for only a few months, but he said recovered patients who don’t become reinfected after a year “would be a good sign that the vaccine ought to work” for at least that long.


Read the original post

Outbreak Daily Digest
Biotech Facts & Fallacies
GLP Podcasts
Infographic: Here’s where GM crops are grown around the world today

Infographic: Here’s where GM crops are grown around the world today

Do you know where biotech crops are grown in the world? This updated ISAAA infographics show where biotech crops were ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

* indicates required
Email Lists
Send this to a friend