Cook with jaundice in a 600-pupil school kitchen
On a Monday morning in Nakuru, the cook at a 600-pupil day school tells the manager she has had yellow eyes, dark urine and fatigue since Saturday. She has a valid food handler medical certificate issued 10 months ago and no fever. She prepared ham sandwiches, sliced watermelon and fruit salad on Thursday and Friday, and also on Monday before reporting symptoms. Another cook was absent five weeks earlier with similar symptoms; the school did not investigate. The manager wants to send her home but keep the kitchen open, and asks whether the children who ate the fruit salad need treatment. The school has one handwash sink with soap but no hot water, and the cook admits she sometimes tastes food with the same spoon. The county public health officer is contactable by phone. Parents are asking whether to close the school.
1. What is the likely infection, what immediate action should be taken, and why does the medical certificate not settle the matter?
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The combination of jaundice, dark urine and fatigue suggests hepatitis A until proved otherwise. The valid medical certificate does not exclude recent infection; it only reflects fitness at the time of examination. Immediate action: exclude her from all food handling and from the kitchen, arrange medical review and hepatitis A testing, and notify the county public health officer by phone the same day. Do not wait for a laboratory result to exclude her. She should not prepare or taste food. The kitchen can remain open if another trained handler takes over and hand hygiene is supervised. Because she handled ready-to-eat fruit and sandwiches, the relevant period is from two weeks before symptoms to seven days after jaundice onset. Record what she handled and when. Clean and sanitise her work surfaces, utensils and the handwash sink. Stop the tasting-spoon practice immediately.
2. What should the manager tell parents and staff, and should the school close?
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Notify public health and keep a line-list of pupils and staff with jaundice, dark urine, pale stools, nausea or fever. Advise parents to watch for these signs for up to 50 days and to report them. Hepatitis A vaccine may be offered to close contacts within 14 days, but that is a public health decision, not the manager's. There is no automatic need to close the school unless cases cluster or hygiene fails. The earlier cook's illness five weeks ago is a possible linked case and must be reported. Give parents facts, not assurances. Check the handwash sink: soap and running water are present, but no hot water is acceptable if handwashing is thorough; add disposable towels. Exclude any symptomatic handler. Reinforce hand hygiene after toilet use and before food handling, and stop bare-hand contact with ready-to-eat food.
3. State the return-to-work criteria and three kitchen changes needed before the cook returns.
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Return-to-work criteria: at least seven days after the onset of jaundice, clinical recovery, and written clearance from the county public health officer or medical officer. If there was no jaundice, seven days after the onset of symptoms. Follow local public health advice on stool testing. Before return, make three changes: provide a dedicated handwash basin with soap, running water and disposable towels; require a separate tasting spoon and forbid bare-hand contact with ready-to-eat food; and start a daily food handler health check and register. On return, retrain her in hand hygiene and report any recurrence of symptoms. Arrange hepatitis A vaccination for staff if public health offers it. The manager should also fix the handwash station and document the outbreak response.