Over 60 per cent of people need to be vaccinated for herd immunity —WHO

Latest News

Over 60 per cent of people need to be vaccinated for herd immunity —WHO

Friday, November 27, 2020

Print this page Email A Friend!

GENEVA, Switzerland (AP) — Scientists at the World Health Organization estimate that about 60 to 70 per cent of people in countries will need to be vaccinated against the coronavirus to achieve any type of herd immunity.

At a press briefing on Friday, WHO vaccines expert Dr Kate O'Brien said it was still unclear if vaccines against COVID-19 might reduce the amount of time people are infectious or their ability to spread the virus. But she said modelling studies suggest up to 70 per cent of the population will need to be immunised so that people are protected from the disease.

“It's really important that we actually start to get more information about what the vaccines do, not just for preventing disease, but for actually preventing the acquisition of the virus,” said O'Brien, director of the UN health agency's department of immunization, vaccines and biologicals.

Dr Michael Ryan, WHO's emergencies chief, noted that in some situations, targeting certain groups for vaccination may be more important than immunising the entire population.

“We've seen in many clusters that only 20 per cent of the cases go on to transmit to others, 80 per cent don't transmit to anybody else,” he said. “I think we'll need to be much more surgical and precise in exactly who we target for vaccination. It may be much more important to target certain sections of the community.”

Now you can read the Jamaica Observer ePaper anytime, anywhere. The Jamaica Observer ePaper is available to you at home or at work, and is the same edition as the printed copy available at http://bit.ly/epaper-login




1. We welcome reader comments on the top stories of the day. Some comments may be republished on the website or in the newspaper � email addresses will not be published.

2. Please understand that comments are moderated and it is not always possible to publish all that have been submitted. We will, however, try to publish comments that are representative of all received.

3. We ask that comments are civil and free of libellous or hateful material. Also please stick to the topic under discussion.

4. Please do not write in block capitals since this makes your comment hard to read.

5. Please don't use the comments to advertise. However, our advertising department can be more than accommodating if emailed: advertising@jamaicaobserver.com.

6. If readers wish to report offensive comments, suggest a correction or share a story then please email: community@jamaicaobserver.com.

7. Lastly, read our Terms and Conditions and Privacy Policy

comments powered by Disqus



Today's Cartoon

Click image to view full size editorial cartoon