Fatal Asthma in New Zealand

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Abstract
To the Editor: In his timely review of mortality due to asthma, Dr. Benatar refers to the second epidemic of fatal asthma in New Zealand (Feb. 13 issue).1 Some aspects of that epidemic require clarification or amplification.First, the dramatic increase in mortality in 5- to 34-year olds occurred in 1977, when annual mortality rates rose almost twofold, from 2.0 to 3.7 per 100,000.2 Mortality in that age group fluctuated between 3.0 and 4.1 per 100,000 for five years until 1983, when it fell 22 percent, from 3.1 to 2.4 per 100,000. The New Zealand national asthma mortality study,3 which . . .

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