CD40LG and measles: Person B (sex not disclosed), whohad visited KIX on 31 July, consulted physicians and was diagnosed with thecommon cold and/or drug eruption before measles-specific IgM was confirmed.Given that person B returned from China during the measles incubation period andvisited KIX while symptomatic on 31 July, this person was considered to be thepossible source of MV for all five cases, even though the confirmation ofgenotype H1 strain was not obtained from the case.