: As a part of the ongoing polio virus control and environmental surveillance activities, the Sindh health department is considering a proposal to test sewage specimens to be collected from various parts of Karachi and others parts of Sindh. The samples are proposed to be examined in collaboration with certain national and international organizations to see if polio viruses were present. Sources in the health department said that the proposal was discussed at a meeting of senior representatives of international health organizations and the Sindh health department held here on Monday.