Related Experiment Video
Updated: Jul 5, 2026

Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
Published on: January 28, 2019
Outbreak of rotavirus gastroenteritis with high mortality, Nicaragua, 2005
Juan José Amador1, Andrea Vicari, Reina M Turcios-Ruiz
1Ministerio de Salud, Managua, Nicaragua.
Insights
A rotavirus vaccine could prevent many childhood deaths and illnesses from gastroenteritis outbreaks. Key risk factors for death included severe illness, malnutrition, and care by traditional healers.
Area of Science:
- Pediatrics
- Infectious Diseases
- Epidemiology
Background:
- A severe rotavirus gastroenteritis outbreak in Nicaragua affected children under 5, causing significant morbidity and mortality.
- The study aimed to assess the potential impact of a rotavirus vaccine and identify risk factors for mortality.
Purpose of the Study:
- To determine if a rotavirus vaccine could have prevented illnesses and deaths during the outbreak.
- To identify risk factors associated with death in children hospitalized with diarrhea.
- To develop a clinical profile of hospitalized children and forecast vaccine accessibility.
Main Methods:
- A case-control study compared children who died with surviving, age-matched controls to assess immunization access.
- Clinical, stool, and immunization data were collected from hospitalized children.
- Rotavirus was tested in stool samples.
Main Results:
- The 2005 outbreak resulted in 47,470 consultations and 52 deaths.
- A rotavirus vaccine could have prevented up to 68% of deaths and 51% of severe cases.
- Severe illness, malnutrition, and care by traditional healers were identified as risk factors for death.
- Rotavirus was detected in 42% of hospitalized children, linked to severe disease and dehydration.
Conclusions:
- Rotavirus vaccine introduction could significantly reduce the impact of seasonal rotavirus outbreaks.
- Improvements in oral rehydration programs and training for traditional healers are also recommended.
Objectives:
We investigated a nationwide outbreak of severe rotavirus gastroenteritis in Nicaragua in children under 5 years old, leading to many consultations, hospitalizations, and deaths. We questioned whether a vaccine might have prevented these illnesses and deaths, sought to identify risk factors for death, and developed a clinical profile of children hospitalized with diarrhea.
Methods:
We conducted a case-control study to determine whether children who died had access to routine immunizations, a proxy predicting access to a rotavirus vaccine. We identified risk factors for death among children who died in the outbreak compared with surviving age-matched controls with diarrhea. We collected stools, clinical data, and immunization data on children hospitalized for diarrhea to test for rotavirus, develop the profile, and forecast future access to a rotavirus vaccine.
Results:
The outbreak from February to April 2005 caused 47 470 consultations and 52 deaths. Approximately 80% of cases and controls and 60% of children hospitalized with diarrhea had access to routine immunizations and would likely have had access to a rotavirus vaccine. With a vaccine efficacy of 85%, up to 51% of severe rotavirus cases and up to 68% of deaths could have been prevented if a rotavirus vaccine were available as part of routine childhood immunizations. Study of 35 case-control pairs indicated that severe illnesses, malnutrition, and care by traditional healers were risk factors for death. Rotavirus was found in 42% of samples from hospitalized children and was associated with severe disease and dehydration.
Conclusions:
The impact of the seasonal outbreaks of rotavirus disease could be diminished with a rotavirus vaccine, improvements in oral rehydration programs, and training of traditional healers in the proper management of children with acute diarrhea.
Related Concept Videos
Cholera
Bacterial Gastroenteritis
Respiratory Syncytial Virus Disease
Poliomyelitis
Botulism
Investigation of Disease Outbreaks
