meta_pixel
Tapesearch Logo
Log in
Science Weekly

Is polio in our sewage as worrying as it sounds?

Science Weekly

The Guardian

Science

4.21K Ratings

🗓️ 30 June 2022

⏱️ 12 minutes

🧾️ Download transcript

Summary

Last week, public health officials declared a ‘national incident’ after they found vaccine-derived poliovirus in London sewage samples. No cases of polio symptoms have been reported but there is evidence the virus is spreading. So what does it mean to have found the virus almost 20 years after the UK was declared polio-free? Ian Sample speaks to epidemiologist Nicholas Grassly to find out how worried we should be and what it means for the global effort to eradicate polio.. Help support our independent journalism at theguardian.com/sciencepod

Transcript

Click on a timestamp to play from that location

0:00.0

This is the Guardian. Get your morning mojo going with Mullah like Greek style.

0:17.0

Now with a new recipe, with Vitamin B6 and Vitamin D. Let's have it!

0:25.0

Mull-a-light, get the good going. It's been almost 20 years since the UK was declared polio free, on almost 40 years since the country

0:46.2

reported its last case of the disease.

0:49.7

No wonder then that last week's news got some people worried.

0:53.0

Well, let's bring you some breaking news this lunchtime,

0:55.0

and polio has been detected in sewage samples collected from a treatment works.

1:00.0

In East London, our health...

1:02.0

Public health officials declared a national incident

1:04.7

because they had found polio virus derived from a vaccine

1:07.6

in London sewage samples taken between February and May.

1:11.7

But for clarity, what they detected was Poliovirus and not Polio the disease.

1:17.0

As of today, no cases have been reported.

1:20.0

Polomyelitis or Polio is a highly infectious viral disease that mostly affects children under five.

1:27.0

Most people won't have symptoms and will fight the virus off without knowing they were even infected.

1:32.0

But in a small fraction of cases the virus can cause

1:35.2

paralysis. Globally the disease has been almost entirely eradicated thanks to the

1:41.1

rollout of mass vaccination campaigns.

1:43.4

The crucial word though is almost.

1:46.0

Because as the COVID pandemic reminded us,

1:49.8

as long as there's virus out there in our hyper-connected world, the chances are we'll encounter it.

1:56.0

Fortunately though, a fully vaccinated person is 99 to 100% protected against the disease.

...

Please login to see the full transcript.

Disclaimer: The podcast and artwork embedded on this page are from The Guardian, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of The Guardian and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.

Copyright © Tapesearch 2026.