Pakistan Reports 18th Polio Case

Pakistan's National Emergency Operations Centre confirmed the country's 18th wild poliovirus type 1 case of the reporting year.

How a case becomes official

Every child under 15 in Pakistan who develops sudden onset of floppy paralysis is investigated under acute flaccid paralysis (AFP) surveillance. Stool samples are collected within a defined window and sent to the WHO-accredited Regional Reference Laboratory at the National Institute of Health in Islamabad. Only laboratory confirmation makes a case official.

This is why announcements lag the illness, sometimes by several weeks, and why the running tally can be revised. It is also why AFP surveillance quality matters so much: a paralysis case that is never investigated, or where samples are collected too late or handled badly, is a case the programme never sees.

What one case represents

Roughly one poliovirus infection in two hundred results in paralysis. A single confirmed case therefore implies a substantially larger number of children already infected in the same community without symptoms. The outbreak response is aimed at those invisible infections, not only at the household where paralysis occurred.

The response protocol

• Emergency vaccination house to house across the affected union council and neighbouring areas, usually within days.
• Case investigation reconstructing the child's vaccination history. In the large majority of Pakistani cases the child was unvaccinated or had received too few doses.
• Active case search across health facilities and communities nearby, looking for other paralysis that was never reported.
• Expanded environmental sampling to establish how far the virus has already spread.
• Genetic sequencing of the isolated virus, which shows how closely it is related to strains found elsewhere and therefore how it travelled.

What the tally is for

Publishing a cumulative count makes the year's trajectory visible rather than presenting each case as an isolated event. It is the figure against which campaign strategy is judged by the programme's own leadership, its partners and the independent Technical Advisory Group.

For parents

The children who are paralysed are almost always those who were missed — repeatedly. Two drops for every child under five in every campaign round, even if they were vaccinated last month. Complete the routine EPI schedule, which is what provides lasting protection. If a team never reaches your household, call 1166, which is toll-free.

Related: how surveillance works · district-wise cases · polio FAQs