Related Experiment Videos
A prospective study of rotavirus infection in infants and young children
Insights
Rotavirus is the most common cause of infant gastroenteritis, often leading to diarrhea and respiratory symptoms. Breastfeeding and maternal antibodies do not appear to protect infants from rotavirus infection.
Area of Science:
- Pediatrics
- Infectious Diseases
- Virology
Background:
- Diarrhea is a significant health concern in neonates and infants.
- Understanding the etiology of infant gastroenteritis is crucial for developing effective prevention and treatment strategies.
Purpose of the Study:
- To prospectively investigate the incidence and characteristics of diarrhea in a cohort of neonates and their families.
- To identify the common enteropathogens responsible for gastroenteritis in infants and young children.
Main Methods:
- Prospective cohort study following infants and their families for an average of 16.3 months.
- Collection of stool and serum specimens every three months for analysis.
- Examination of stool for viruses (electron microscopy) and bacteria (culture), and testing serum for antibodies to rotavirus and Norwalk virus.
Main Results:
- Rotavirus was the most frequent enteropathogen, identified in 72 children and associated with 65% of diarrhea episodes.
- Rotavirus diarrhea predominantly occurred in winter months and was frequently linked to respiratory symptoms.
- By two years of age, 62% of infants had experienced at least one rotavirus infection.
- Breastfeeding and the presence of rotavirus antibodies in cord blood did not demonstrate a protective effect.
Conclusions:
- Rotavirus is a major cause of infant gastroenteritis, with significant morbidity.
- Early-life rotavirus infections are common, and protective factors like breastfeeding appear limited.
- Further research into rotavirus prevention and management in infants is warranted.
Abstract:
Diarrhea in neonates, followed as a cohort, and their families was studied prospectively. The families were followed for an average of 16.3 months. Stool and serum specimens were obtained at least every three months. Stool specimens were examined for viruses by electron microscopy and cultured for enteropathogens, and serum specimens were tested for antibodies to rotavirus and Norwalk virus. During the study, 237 episodes of gastroenteritis were observed in 104 infants and their 62 siblings. Rotavirus, detected 82 times in 72 children, was by far the most common enteropathogen. It was associated with gastrointestinal symptoms in 72% (with diarrhea in 65%). Rotavirus diarrhea occurred mostly in winter months and was significantly more frequently associated with respiratory symptoms than were diarrheas with other etiologies. Rotavirus infection was uncommon in the first six months of life, but by two years of age, 62% of the infants had had at least one infection. Neither breast feeding nor the presence of antibody to rotavirus in cord blood appeared to be protective.