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Updated: Aug 13, 2026

Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR
Published on: July 22, 2012
Human caliciviruses and pediatric gastroenteritis
Sarbelio Moreno-Espinosa1, Tibor Farkas, Xi Jiang
1Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
Insights
Human caliciviruses, especially Noroviruses, are a leading cause of pediatric gastroenteritis, sometimes severe. Advances in diagnosis and vaccine development are ongoing for these difficult-to-culture viruses.
Area of Science:
- Virology
- Pediatric Gastroenterology
- Molecular Diagnostics
Background:
- Human caliciviruses, particularly Noroviruses, are a major cause of acute pediatric gastroenteritis, second only to rotavirus.
- Noroviruses can cause severe illness requiring hospitalization, while Sapoviruses typically cause milder, endemic disease.
- These viruses are genetically diverse, with multiple types circulating simultaneously.
Purpose of the Study:
- To summarize recent advancements in understanding human caliciviruses.
- To highlight the role of molecular diagnostics in surveillance.
- To discuss progress in classification, diagnosis, and vaccine development.
Main Methods:
- Molecular diagnostic methods for surveillance.
- Genetic and antigenic characterization.
- Research into Norovirus receptor recognition (histoblood group antigens).
Main Results:
- Noroviruses identified as a primary cause of pediatric acute gastroenteritis.
- Sapoviruses identified as a cause of milder endemic pediatric gastroenteritis.
- Discovery of Norovirus binding to human histoblood group antigens.
Conclusions:
- Human caliciviruses remain a significant public health concern in pediatrics.
- Despite challenges in cultivation, substantial progress has been made.
- Future developments in diagnosis and vaccines are anticipated.
Abstract:
Surveillance using molecular diagnostic methods developed in the past decade shows that human caliciviruses, particularly the Noroviruses, are the most important cause of pediatric acute gastroenteritis, next to rotavirus. Noroviruses also cause severe gastroenteritis in children, requiring hospitalization. The Sapovirus, a morphologically and genetically distinct genus of calicivirus, cause mainly milder endemic pediatric gastroenteritis. Noroviruses and Sapoviruses are genetically and antigenetically diverse, and multiple genetic types cocirculate in the same community. Human caliciviruses still cannot be cultivated in cell culture or in an animal model. Significant progress has been made in the past decade in the classification, diagnosis, and vaccine development, as well as in the recent discovery of Norovirus recognizing human histoblood group antigens as receptors. Major developments in this field are expected to occur in the near future.
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