FILE - Palestinians sort through trash at a landfill in Nuseirat refugee camp, Gaza Strip, Thursday, June 20, 2024. Health authorities and aid agencies are racing to avert an outbreak of polio in the Gaza Strip after the virus was detected in the territory's wastewater and three cases with a suspected polio symptom have been reported. (AP Photo/Abdel Kareem Hana, File)
FILE - Palestinians displaced by the Israeli air and ground offensive on the Gaza Strip walk next a dark streak of sewage flowing into the streets of the southern town of Khan Younis, Gaza Strip, Thursday, July 4, 2024. Health authorities and aid agencies are racing to avert an outbreak of polio in the Gaza Strip after the virus was detected in the territory's wastewater and three cases with a suspected polio symptom have been reported. (AP Photo/Jehad Alshrafi, File)
FILE - Palestinians displaced by the Israeli air and ground offensive on the Gaza Strip, walk through a dark streak of sewage flowing into the streets of the southern town of Khan Younis, Gaza Strip, on July 4, 2024. Health authorities and aid agencies are racing to avert an outbreak of polio in the Gaza Strip after the virus was detected in the territory's wastewater and three cases with a suspected polio symptom have been reported. (AP Photo/Jehad Alshrafi, File)
FILE - Palestinians displaced by the Israeli air and ground offensive on the Gaza Strip, walk past sewage flowing into the streets of the southern town of Khan Younis, Gaza Strip, Thursday, July 4, 2024. Health authorities and aid agencies are racing to avert an outbreak of polio in the Gaza Strip after the virus was detected in the territory's wastewater and three cases with a suspected polio symptom have been reported. (AP Photo/Jehad Alshrafi, File)