1. An outbreak of food poisoning due to S. typhimurium and S. thompson is described.
2. These same two serotypes were found in trifle eaten by the victims.
3. S. typhimurium was found in the stools of four members of the bakery staff and in the stool of one member of the grocery staff handling luncheon meat eaten by those affected.
4. S. typhimurium was isolated from drains in the bakery.
5. The phage-type of S. typhimurium found in the food handlers, drains, trifle and victims of the outbreak was the same.
6. The phage-type of S. thompson found in the trifle was identical with that found in the victims of the outbreak.
7. The phage-type of both salmonellae suggested an egg product source.
8. It is surprising how infrequent these outbreaks are, having regard to the very frequent opportunity for the contamination of confectionery products in bake-houses.