Global Capacity for Emerging Infectious Disease Detection, 1996-2014

Area of Science:

• Public Health
• Epidemiology
• Global Health Security

Background:

• Rapid recognition of disease outbreaks is essential for effective control measures.
• Previous studies have documented outbreak detection and communication timeliness.
• This study serves as a follow-up to assess recent trends in outbreak response.

Purpose of the Study:

• To evaluate global improvements in the timeliness of disease outbreak discovery and communication between 2010 and 2014.
• To identify regional and socioeconomic disparities in outbreak detection and reporting.
• To analyze changes in response times compared to earlier periods.

Main Methods:

• Analysis of data from the World Health Organization's Disease Outbreak News for all reported outbreaks.
• Estimation of delays from symptom onset to outbreak discovery and public communication.
• Statistical analysis using Cox proportional hazards regression and Loess curves to assess trends over time.
• Stratification of results by geographic region and Human Development Index (HDI) quartiles.

Main Results:

• Improvements in outbreak discovery and communication timeliness were observed, particularly in the Eastern Mediterranean and Western Pacific regions, and middle HDI quartiles.
• However, the pace of progress slowed significantly, with little advancement noted between 2010 and 2014.
• Disparities in timeliness persist across different regions and socioeconomic development levels.

Conclusions:

• While some regions show progress, overall improvements in outbreak detection and communication timeliness have stagnated.
• Enhanced international collaboration is crucial for future advancements in global disease surveillance.
• Focusing on regions with low or unstable Human Development Index (HDI) is essential to address persistent gaps in timely outbreak response.