FOOD POISONING OUTBREAK IN HULU PERAK
INTRODUCTION & OBJECTIVE
A food poisoning outbreak was reported to Hulu Perak District Health Office on 6th October 2018. Two fatalities were reported and eleven cases were admitted for having food poisoning symptoms. The source was yet to be determined as the cases came from different parts of the district.
A retrospective-prospective study was conducted. Patients were traced through snow ball method. Data regarding the onset of symptoms, presenting features and history of food items consumed was collected. A detailed inspection of the food premise for hygiene and sanitary status, cooking and storage procedure was also carried out.
A total of 34 cases were detected between 6th to 10th October 2018. All cases had symptoms of diarrhoea followed by abdominal pain (82.4%), fever (79.4%), nausea and vomiting (67.6.1%) and headache (29.4%). The mean incubation period was 9 hours. Based on the food attack rate, rice noddle that was put for sale on 4th October 2018 was subjected as the item responsible for the outbreak.
Based on the symptoms and incubation period, rice noodle was suggested to be contaminated with Salmonella spp. Pulse Field Gel Electrophoresis (PFGE) confirmed presence of Salmonella enterica serovar Weltevreden in both clinical and environmental samples.