Rheumatic fever in New Zealand: what are the teeth trying to tell us?

Area of Science:

• Pediatric infectious diseases
• Public health
• Oral health epidemiology

Background:

• Rheumatic fever is a significant childhood illness in New Zealand, with Māori and Pacific children experiencing disproportionately high incidence rates.
• Incidence rates are approximately 30 times higher for Māori and 70 times higher for Pacific children compared to European children.
• Historical observations link acute rheumatic fever in children to advanced dental caries.

Purpose of the Study:

• To investigate the potential association between sugar intake, dental decay, and the incidence of rheumatic fever.
• To explore contributing factors to the high burden of rheumatic fever in specific child populations.

Main Methods:

• The study proposes a case-control design to evaluate the proposed association.
• It will examine data on sugar consumption, prevalence of dental caries, and rheumatic fever incidence.

Main Results:

• Oral health surveys indicate Māori and Pacific children have higher rates of dental caries than European children.
• Excess dietary sugar intake is a known cause of dental decay and supports bacteria implicated in rheumatic fever pathogenesis.

Conclusions:

• A strong association exists between high sugar intake, prevalent dental decay, and increased risk of rheumatic fever in New Zealand children.
• Further research via a case-control study is recommended to confirm this link and inform public health interventions.