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Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
Published on: January 28, 2019
[Epidemiological study of rotavirus diarrhea in Beijing, China - a hospital-based surveillance from 1998 - 2001]
Zhi-li Tong1, Li Ma, Jing Zhang
1National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China.
Insights
Rotavirus infection significantly impacts children under three in Beijing, causing substantial diarrhea and deaths. Vaccination is crucial for prevention and reducing healthcare costs in China.
Area of Science:
- Epidemiology of infectious diseases
- Pediatric gastroenterology
- Virology
Context:
- Acute diarrhea is a major health concern in young children globally.
- Hospital-based surveillance provides critical data on infectious disease patterns.
- Understanding rotavirus epidemiology is essential for public health interventions.
Purpose:
- To investigate the epidemiology of rotavirus infection among children under five years old in Beijing, China.
- To determine the prevalence, seasonality, and age distribution of rotavirus diarrhea.
- To identify the predominant rotavirus serotypes and their contribution to childhood diarrhea.
Summary:
- Rotavirus was detected in 25.4% of acute diarrhea cases in children under five in Beijing over a three-year period.
- The highest detection rates were observed in infants aged 6-11 months, with 96.8% of infections occurring in children under three.
- Rotavirus caused significant mortality, accounting for 40% of diarrhea-related deaths, with serotype G1 being predominant.
Impact:
- Rotavirus diarrhea represents a significant infectious disease burden in Beijing's pediatric population.
- Findings highlight the urgent need for safe and effective rotavirus vaccines in China.
- Effective vaccination can reduce severe diarrhea cases and associated treatment costs.
Objective:
To provide information on epidemiology of rotavirus infection in Beijing, China.
Methods:
An ongoing hospital-based surveillance was conducted among children < 5yr old with acute diarrhea according to WHO generic protocol (CID-98). During a 3-year study (Apr. 1998 to Mar. 2001), a total of 484 stool samples were collected from 1 457 patients, including 275 samples from 1 048 outpatients and 209 samples from 409 inpatients.
Results:
The overall detection rate of rotavirus infection was 25.4%. Rotavirus was responsible for 27.3% of diarrhea inpatients on a yearly base, and 46.2% during rotavirus season. Two peaks of diarrhea were observed each year, one in the summer (June-Sep.) due to bacterial dysentery (16.7%) and another in fall winter (Oct.-Dec.) due to rotavirus infection (23.0%). The detection rate on rotavirus was the highest in age group of 6 - 11 months (38.2%), followed by 1 - 2 years old (28.5%). Ninety six point eight percentage of children were infected under 3 years of age. The number of deaths, possibly caused by rotavirus diarrhea were accounted for 40% of all diarrhea deaths and 11.1% of the total deaths. Serotyping of 123 rotavirus isolates showed that serotype G1 (55.3%) was predominant, followed by G2 (26.8%), G3 (9.8%), G4 (0.8%), and 10 isolates (8.1%) remained non-typeable. Mixed infections (0.8%) seemed to be rare.
Conclusion:
Rotavirus diarrhea was an important infectious disease among children in Beijing. Safe and effective rotavirus vaccines for the prevention of severe diarrheas and the reduction of treatment costs are of significant importance to China.
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