Human Caliciviruses Are a Significant Pathogen of Acute Sporadic Diarrhea in Children of Santiago, Chile
作者:Miguel L. O'Ryan、Nora Mamani、Aldo Gaggero、Luis Fidel Avendaño、Susana Prieto、Alfredo Peña、Xi Jiang、David O. Matson
DOI:10.1086/315874
日期:2000.11
Human caliciviruses (HuCVs) are increasingly recognized as common pathogens that cause acute sporadic diarrhea in children; however, regional antigenic and genetic diversity complicate detection techniques. Stool samples from children seeking medical attention in 2 outpatient clinics, a large emergency department, and 2 hospital wards were evaluated for HuCVs by reverse transcription—polymerase chain reaction, using primers based on a conserved sequence of the polymerase region of a previously sequenced Chilean strain. HuCVs were detected in 53 (8%) of 684 children 1 month to 5 years of age (mean, 13 months). Detection occurred year-round without a clear seasonal peak, and detection frequency declined from 16% in 1997 to 2% in 1999. The decline may have been due to a change in virus genotype. HuCVs are a significant pathogen of acute sporadic diarrhea in Chilean children, and continuous characterization of genetic diversity will be crucial for appropriate detection.
人杯状病毒(HuCVs)作为一种常见的病原体,导致儿童急性散发性腹泻的作用日益受到重视;然而,其抗原性和遗传学的区域多样性复杂化了检测技术。本研究采用逆转录-聚合酶链反应,以基于先前智利分离株的聚合酶区域保守序列设计的引物,对两所门诊诊所、一家大型急诊科和两家医院病房中因病就诊的儿童粪便样本进行了HuCVs检测。在684名1个月至5岁的儿童中(平均年龄13个月),有53名(8%)检出HuCVs。检测全年均有发生,无明显季节高峰,且检出频率从1997年的16%下降至1999年的2%。这种下降可能归因于病毒基因型的改变。HuCVs是智利儿童急性散发性腹泻的重要病原体,而持续对遗传多样性进行表征对于正确检测至关重要。