Delta ‘blunts jabs’ effectiveness’, casts doubt on herd immunity and could see hoarding

Some vaccines lost effectiveness after three months, which is likely to lead to calls for booster shots

19 August 2021 - 19:56 By Naomi Kresge

Covid-19 vaccines are less effective against the Delta variant, according to results in the UK from one of the largest real-world studies into the efficacy of the shots...

This article is free to read if you sign up or sign in.

If you have already registered or subscribed, please sign in to continue.

Questions or problems? Email or call 0860 52 52 00.

Would you like to comment on this article?
Sign up (it's quick and free) or sign in now.

Speech Bubbles

Please read our Comment Policy before commenting.