The paper describes a case of a 52-year-old patient who presented with a high fever, fatigue, myalgia, retrobulbar headache, a confluent maculopapular rash, conjunctivitis and oral ulcers four days after his return from Kenya. The blood film showed mild leukopenia with a shift to the left, mild thrombocytopenia and elevated hepatic aminotransferases about two times the normal values. Three consecutive thick blood films showed no malaria parasites. Salmo­nella Heidelberg was isolated from stool cultures. The patient was immediately admitted to the hospital under suspicion of dengue.