Haemorrhagic colitis and haemolytic-uraemic syndrome: false positive reaction with a rotavirus latex agglutination test.

A stool sample from a child with haemorrhagic colitis and haemolytic-uraemic syndrome gave a positive reaction with the RotaScreen latex agglutination test in the absence of other evidence of rotavirus infection. When this test is performed on bloody specimens, positive reactions should be interpreted with caution and confirmed by other means.