A case of Campylobacter upsaliensis isolated by blood culture from a c
hild with fulminant hepatitis A virus infection is described. The orga
nism was identified by negative results of catalase, hippurate hydroly
sis and H2S production, positive oxidase test, growth at 37 degrees C
and 42 degrees C in a microaerophilic atmosphere, failure to grow at 2
5 degrees C and susceptibility to cephalothin and nalidixic acid. Prev
iously reported cases are reviewed.