Gaza’s health ministry has declared a polio epidemic across the Palestinian enclave, blaming Israel’s devastating military offensive for the spread of the deadly virus, writes Al Jazeera.

In a statement on Telegram, the ministry on Monday said the situation “poses a health threat to the residents of Gaza and neighbouring countries” – the latest sign of a worsening public health emergency caused by Israel’s genocidal war since October.

Calling the epidemic a “setback” to the global polio eradication programme, the ministry called for an “immediate intervention to end the [Israeli] aggression and find radical solutions” to lack of potable water and personal hygiene, damaged sewage networks and removal of tonnes of rubbish and solid waste.

Poliomyelitis, which is spread mainly through the fecal-oral route, is a highly infectious virus that can invade the nervous system and cause paralysis. Cases of polio have declined by 99 percent worldwide since 1988, thanks to mass vaccination campaigns, and efforts continue to eradicate it everywhere.

Earlier this month, Gaza’s health ministry said it had detected “component poliovirus type 2” in coordination with the United Nations Children’s Fund (UNICEF). The virus was found in sewage “that collects and flows between the tents of the displaced,” said the ministry.

Already scarce supplies of drinking water in the densely-populated Gaza Strip are at risk of being contaminated by the virus.