Relative Risk of Communicable Disease after Natural versus Manmade Disasters, Exposure of Susceptibles to Endemic Communicable Disease, Special Problems with Communicable Disease in Encamped Populations, Surveillance Sources Following Disaster, Diseases to Include in Surveillance, The Collection, Interpretation and Utilization of Data, Providing Feedback to the Field from the Central Level, Field Investigation of Rumors, Immunization, Chemotherapy, Quarantine and Isolation