| rheumatic fever and streptococci: the wairoa college study. | the decline in incidence of rheumatic fever seen in many countries is not evident in new zealand. wairoa county has the highest hospital admission rate within new zealand, 232 per 100 000 per year, five times the national average, 43 per 100 000. studies in wairoa included a cross-sectional survey of the local secondary school. throat swabbing yielded 13.6% of subjects positive for beta-haemolytic streptococcus group a. boys had a higher rate than girls, and girls aged 14 and over had a lower ra ... | 1978 | 347343 |