Related Experiment Video
Updated: Jul 13, 2026

Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
Published on: January 28, 2019
[Relationship between severity of rotavirus diarrhea and serotype G and genotype]
Li-jie Zhang1, Zhao-yin Fang, Guang Zeng
1Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China.
Insights
Rotavirus diarrhea severity differs by G and P genotypes. Rotavirus G1 with P[8] caused more severe diarrhea than G3 with P[8]. Rotavirus P[4]G3 and P[8]G3 showed similar severity.
Area of Science:
- Virology
- Pediatric Infectious Diseases
Context:
- Rotavirus is a leading cause of severe diarrheal disease in young children globally.
- Understanding the relationship between rotavirus genotypes and disease severity is crucial for public health interventions.
Purpose:
- To investigate the association between rotavirus G and P genotypes and the clinical severity of rotavirus diarrhea in hospitalized children.
- To compare the severity of rotavirus diarrhea caused by different G and P serotypes.
Summary:
- This study analyzed clinical data and rotavirus genotypes (G and P) from hospitalized children under five with acute diarrhea.
- Rotavirus G1, when combined with P[8], was linked to higher diarrhea severity scores and fever compared to G3 with P[8].
- No significant difference in severity was observed between P[4]G3 and P[8]G3, although P[4]G3 cases had longer diarrhea duration.
Impact:
- Findings highlight that specific rotavirus genotypes (e.g., P[8]G1) are associated with more severe disease outcomes.
- This information can inform vaccine development and strain surveillance efforts for rotavirus.
- Understanding genotype-specific severity can aid in clinical management and resource allocation for rotavirus outbreaks.
Objective:
To learn the relationship between severity of rotavirus diarrhea and serotype G and genotype P.
Method:
The clinical information and fecal specimens of hospitalized children less than 5 years of age with acute diarrhea in four sentinel hospitals were collected from Aug 2001 to July 2003. Specimens were tested and typed for rotavirus. Each child with rotavirus infection was assessed for severity of diarrhea according to the 20-points scoring system of Vesikari.
Results:
When combined with P[8], the severity scores for rotavirus diarrhea of P[8]G1 and P[8]G3 were 13 and 12 points, respectively, and the durations of diarrhea were 6 days and 5 days, respectively. The percentage of fever in patients with diarrhea caused by P[8]G1 was higher than that in those with diarrheas caused by P[8]G3 (97 percent vs. 73 percent). And the highest temperature in the cases with diarrheas caused by G1 and G3 was 39 degrees C and 38.6 degrees C, respectively. When combined with G3, the difference of diarrhea severity scores between P[4]G3 and P[8]G3 was not significant. But duration of diarrhea caused by P[4] was longer than that of diarrheas caused by P[8] (6.5 days vs. 5 days) and the maximum times of vomiting in P[8] cases was higher than in p[4] cases (4 times vs. 3 times per day). There was no significant difference in other clinical features between P[8] and P[4] infected cases.
Conclusion:
When combined with P[8], RV diarrhea caused by G1 was associated with higher severity scores than diarrhea caused by G3. When combined with G3, there was no significant difference in severity scores between P[4] and P[8] infected cases.
Related Concept Videos
Bacterial Gastroenteritis
Poliomyelitis
Cholera
Giardiasis
Respiratory Syncytial Virus Disease
Size and Structure of Viral Genomes
