'Sewage has overwhelmed the streets after months of heavy bombardments' In Deir Al-Balar and elsewhere in the Gaza Strip, sewage has overwhelmed the streets after months of heavy bombardments. The polio virus was detected in the sewage in July, and now the disease has been found in a 10-month-old baby. "Having one case means that the virus is present in the Gaza Strip, and we can confirm there may be infected people not yet detected," said Afif Atawneh, General Director at Palestine Health Ministry.