Related Experiment Video
Updated: Aug 30, 2026

Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR
Published on: July 22, 2012
[Rotavirus detection in feces of children with acute diarrhea]
J V Fernandes1, S M Fonseca, J C Azevedo
1Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil.
Insights
Rotavirus is a significant cause of acute diarrhea in children in Natal, Brazil. Infections are most common in children aged 6-24 months, with peak incidence during the winter months of July, August, and September.
Area of Science:
- Pediatrics
- Virology
- Public Health
Background:
- Acute diarrhea remains a leading cause of morbidity in children globally.
- Rotavirus is a primary viral pathogen responsible for severe gastroenteritis in infants and young children.
- Understanding local prevalence and seasonality is crucial for effective public health interventions.
Purpose of the Study:
- To determine the prevalence of rotavirus in children with acute diarrhea in Natal, Brazil.
- To investigate the seasonal distribution of rotavirus infections in this population.
- To identify age groups most affected by rotavirus-associated diarrhea.
Main Methods:
- Analysis of fecal samples from 1,903 children aged 1 month to 10 years with acute diarrhea.
- Detection of rotavirus particles using passive agglutination with anti-rotavirus monoclonal antibodies.
- Data collected between January 1996 and December 1998 in Natal, RN, Brazil.
Main Results:
- Rotavirus was detected in 7.9% (151/1,903) of all children studied.
- Prevalence increased to 12.8% (136/1,065) in children aged 1-24 months.
- The majority of positive cases (96.3%) were in children aged 6-24 months, with peak incidence from July to September.
Conclusions:
- Rotavirus plays a significant role in the etiology of acute diarrhea among children in Natal.
- Infection predominantly affects children within their first two years of life, particularly those aged 6-24 months.
- A distinct seasonal pattern of rotavirus infection was observed, with higher incidence during the winter months.
Abstract:
OBJECTIVE: To determine the prevalence of rotavirus in the etiology of acute diarrhea in children from Natal city, RN, Brazil and investigate the existence or not of a seasonal distribution of this pathogen in our environment.METHODS: Fecal samples from 1,903 children (boys and girls) with ages ranging from 1 month to 10 years, living in Natal-RN, who presented acute diarrhea episodes in a period from January 1996 to December 1998, were analyzed. We searched viral particles directly in the feces by a passive agglutination reaction using anti-rotavirus specific-group monoclonal antibodies coated latex particles.RESULTS: 151 children (7.9%) of the studied population presented a positive reaction, revealing the presence of rotavirus particles in feces. Considering, however, only the children (ages from 1 to 24 months) who are more susceptible to rotavirus infection, we verified that from 1,065 examined children, 136 of them (12.8%) presented positive reaction for rotavirus, and the great majority of all children with positive reaction (96.3%) had ages ranging from 6 to 24 months. Analysis of the distribution of the cases of rotavirus infection in the three year revealed that the incidence of infection was higher in July, August, and September.CONCLUSIONS: The results indicated rotavirus infections have an important role in the etiology of acute diarrhea cases. The majority of the acute diarrhea cases positive for rotavirus occurred during the first two years of life, reaching mainly children from 6 to 24 months, with the highest incidence of infection during the months of July, August, and September.
Related Concept Videos
Poliomyelitis
Bacterial Gastroenteritis
