30/10/2026
How do you test for a dangerous disease that can spread without symptoms?
In the fight to eradicate polio, wastewater environmental surveillance acts as an early warning system. Poliovirus can circulate silently because most infections do not cause paralysis, and infected people can shed virus in their stool without knowing they are infected.
“Wastewater allows us to see the virus even when we cannot see the disease,” says Javier Martin, Head of the WHO Global Specialized Laboratory for poliovirus in the United Kingdom.
Routine sampling of wastewater from communities offers a window into what is happening across an entire community, including virus transmission that would otherwise remain invisible.
Scientists at the laboratory, which is run by the Medicines and Healthcare products Regulatory Agency (MHRA), work across many different parts of the polio eradication programme, detecting polioviruses through clinical and wastewater surveillance, sequencing them to understand where they have come from and how they are spreading, and supporting the development and evaluation of safer polio vaccines. They work closely with the United Kingdom Health Security Agency (UKHSA), who in turn transform information into public health action, in the pursuit of a world free from polio.
Learn about the collaborations happening behind the scenes to keep us safer from a devastating disease: https://bit.ly/3WIR4F9
and Healthcare products Regulatory Agency
Health Security Agency