<prompt> Answer this question truthfullyWhat is the resident survival guide for the Norovirus outbreak?  <response>: <reason> Shown below is an algorithm summarizing the approach to norovirus infection outbreak according to recommendations by CDC. Characterize the symptoms: Non bloody diarrhea Vomiting Nausea Abdominal cramps Low grade fever Body aches Chronic diarrhea in immunosuppressed Irritable bowel syndrome Inquire about exposure to settings prone to outbreaks: Health care settings Restaurants Cruise ships Schools and other institutional settings Laboratory tests can be done Laboratory tests cannot be done Collect samples Assess The Kaplan criteria Whole stool sample Collection: Within 48 to 72 hrs after onset From at least 5 ill patients 10-50 ml of whole stool sample in a stool cup Storage: If testing done 3 weeks Refrigerate samples at 39 F If testing done 3 weeks Refrigerate samples at - 4 F Transportation: The specimens are bagged, sealed and transported on ice packs in an insulated and waterproof container. Vomitus sample Environmental samples: Water sample Shellfish samples Environmental surface swabs Mean duration of illness is 12-60 hours. Mean incubation period is 24-48 hours. Vomiting is present in more than 50 of ill people. No bacterial agent is found. Diagnostic tests: Enzyme immunoassays RIDASCREEN Real time RT-PCR Geno-typing Electron microscopy Are all 4 criteria present? Norovirus negative Norovirus positive Yes No Treat as acute gastroenteritis Treat the acute gastroenteritis Norovirus outbreak is highly likely Norovirus outbreak is less likely but cannot be ruled out Implement measures to contain the outbreak Isolate the infected patients and food handlers for a minimum period of 48 hours after recovery from symptoms. Disinfect routinely touched surfaces. Promote hand hygiene among people during an outbreak. Avoid any group activities. Notify local and state health departments. Activate outbreak prevention and response protocol OPRP on cruise ships as per CDC recommendations. Report the outbreak to National Outbreak Reporting SystemRT-PCR: Reverse Transcription Polymerase Chain Reaction 