The Nicaraguan pediatric influenza cohort study: design, methods, use of technology, and compliance

Area of Science:

• Pediatric infectious diseases
• Epidemiology
• Global health

Background:

• Influenza significantly impacts global health, causing widespread illness and death.
• Limited data exists on influenza infection rates in tropical, developing countries.
• The Nicaraguan Pediatric Influenza Cohort Study (NPICS) was established in 2011 to address this knowledge gap.

Purpose of the Study:

• To investigate the burden and seasonality of influenza in Nicaraguan children.
• To describe the study design, methods, and participation data of the NPICS from 2011-2013.

Main Methods:

• Enrolled 1532 children (0-12 years) in 2011, with 401 additional enrollments between 2012-2013.
• Provided comprehensive medical care and systematically recorded data on all medical visits.
• Conducted annual surveys including height/weight, socio-economic status, risk factors, and breastfeeding, alongside blood sample collection.

Main Results:

• The study successfully enrolled a large cohort of children over three years.
• Established a comprehensive data collection system for pediatric influenza surveillance.
• Collected detailed demographic, clinical, and biological data for influenza research.

Conclusions:

• The NPICS developed a low-cost, open-source informatics system for efficient data management.
• Innovative methods were created to leverage existing infrastructure for multiple studies.
• These approaches enhance protocol adherence and quality control, valuable for low-resource settings.