| blinded case-control study of the relationship between human coronavirus nl63 and kawasaki syndrome. | we conducted a blinded, case-control, retrospective study in pediatric patients hospitalized at the children's hospital, denver, colorado, to determine whether human coronavirus (hcov)-nl63 infection is associated with kawasaki syndrome (ks). over the course of a 7-month period, nasopharyngeal-wash samples from 2 (7.7%) of 26 consecutive children with ks and 4 (7.7%) of 52 matched control subjects tested positive for hcov-nl63 by reverse transcription-polymerase chain reaction. these data sugges ... | 2006 | 17109341 |