Invasive Pneumococcal Disease in Children in Tonga

Area of Science:

• Pediatrics
• Infectious Diseases
• Public Health

Background:

• Pneumococcal conjugate vaccine (PCV) is not part of the routine immunization schedule in Tonga.
• Invasive pneumococcal disease (IPD) poses a significant health burden globally, particularly in young children.

Purpose of the Study:

• To determine the incidence and case fatality rates of invasive pneumococcal disease in children in Tonga.
• To provide evidence for the introduction of pneumococcal conjugate vaccine in Tonga.

Main Methods:

• Retrospective study identifying all children diagnosed with invasive pneumococcal disease in Tonga between 2010 and 2013.
• Calculation of age-specific annual incidence rates and case fatality rates.

Main Results:

• The average annual incidence rates of IPD were 113/100,000 (<2 years), 50/100,000 (<5 years), and 25/100,000 (<15 years).
• The case fatality rate for children under 5 years was 25%.

Conclusions:

• Tonga experiences a high burden of invasive pneumococcal disease among children.
• The high incidence and case fatality rates underscore the critical need for implementing the pneumococcal conjugate vaccine program.