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LETTER |
The authors are with the Department of Community Health, School of International Health, Graduate School of Medicine, University of Tokyo, Japan.
Correspondence: Requests for reprints should be sent to Masao Ichikawa, PhD, MPH, Department of Community Health, School of International Health, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan (e-mail: masao@m.u-tokyo.ac.jp)
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Chang et al., using National Health Insurance data, reported significant reductions in medical service utilization at the peak of the severe acute respiratory syndrome (SARS) epidemic in Taiwan.1 This finding may be supported by other evidence from Hong Kong: lowered tuberculosis notifications. Our assumption is that deterred health care seeking during the epidemic resulted in the lowered detection, and thus notification, of tuberculosis.
To examine the recent trend of tuberculosis notifications in Hong Kong, we calculated the average monthly number of notifications (incidence) per 100 000 population and its 95% confidence interval from January 1997 to December 2002, using the
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