Adilabad Collector M. Jagan Mohan on Tuesday called officials connected with Medical and Health and sanitation to be alert for spread of swine flu. He said a survey would be undertaken by ASHA workers and field staff of the District Medical and Health Department to detect cases if any in rural areas, especially the agency belt. Reviewing the preparedness to tackle any outbreak of swine flu in the district, Collector and DMHO G. Rukminamma said any cases if detected need to be shifted to nearest hospital. They said awareness camps would be taken up in the rural areas and slums in the urban centres.