PMID: 32525861Jun 12, 2020Paper

Rheumatic fever recurrences in New Zealand 2010-14

The New Zealand Medical Journal
Adam DennisonNigel Wilson

Abstract

To describe the epidemiology and clinical characteristics of recurrences of acute rheumatic fever (ARF) in New Zealand 2010-14. Retrospective hospital chart review for ARF with repeat hospital admissions from 2010-14, to identify recurrences of ARF. Definitions of recurrence as per NZ Heart Foundation Guidelines. There were 65 episodes of recurrent ARF among 60 patients. Māori 51%, Pacific 49%. Arthritis and carditis were the most common major manifestations. Median age at recurrence 21.6 years, (8-42 years), with 83% patients over 15 years. There were 841 first episodes of ARF in New Zealand in 2010-4. Overall New Zealand ARF recurrence rate was 7.2% (CI 5.5-8.9%). The recurrence rate was 4% for those under 16 years, 16% for those aged 16-20 and 25% for those >20 years (p<0.05). Seventy-three percent of recurrences occurred in the Auckland region. Recurrences of ARF were strongly associated with RHD progression. The risk of recurrence of ARF in New Zealand is low for children. In contrast, recurrences of ARF in New Zealand occur predominantly after age 15, and disproportionately in the Auckland DHBs. Current medical systems and registers may not be meeting the needs of adolescents and adults requiring secondary prophylaxis.

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