Abstract
After a report in 1980 of the first three diagnosed locally cases and a preliminary epidemiological investigation that found little evidence of the disease, a survey was aimed at determining the prevalence of byssinosis in Hong Kong. Some 1776 workers in six cotton mills were studied using the standard MRC questionnaire and portable spirometers. Only 48 (2.7%) of the mill workers had symptoms acceptable for a diagnosis of byssinosis. The pattern of relation to dust exposure levels was similar to findings in other countries: blowing and carding process operatives had twice the prevalence rate of the spinners. Another 178 workers (10%) had symptoms of chest tightness or breathlessness or both that were not related to the first exposure after a break and therefore did not fit the standard diagnosis. Some 257 workers (14.5%) had chronic obstructive airflow disease but only 12 (4.7%) had chronic bronchitis. Job mobility had self selection of sensitive cases out of cotton dust exposure seem the most likely explanations for the low prevalence. The significance of non-specific lung ailments needs further assessment to elucidate the possible connection with cotton dust exposure.
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- ELWOOD P. C. RESPIRATORY SYMPTOMS IN MEN WHO HAD PREVIOUSLY WORKED IN A FLAX MILL IN NORTHERN IRELAND. Br J Ind Med. 1965 Jan;22:38–42. doi: 10.1136/oem.22.1.38. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kamat S. R., Kamat G. R., Salpekar V. Y., Lobo E. Distinguishing byssinosis from chronic obstructive pulmonary disease. Results of a prospective five-year study of cotton mill workers in India. Am Rev Respir Dis. 1981 Jul;124(1):31–40. doi: 10.1164/arrd.1981.124.1.31. [DOI] [PubMed] [Google Scholar]
- Molyneux M. K., Tombleson J. B. An epidemiological study of respiratory symptoms in Lancashire mills, 1963-66. Br J Ind Med. 1970 Jul;27(3):225–234. doi: 10.1136/oem.27.3.225. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Morgan P. G., Ong S. G. First report of byssinosis in Hong Kong. Br J Ind Med. 1981 Aug;38(3):290–292. doi: 10.1136/oem.38.3.290. [DOI] [PMC free article] [PubMed] [Google Scholar]
- SCHILLING R. S. Byssinosis in cotton and other textile workers. Lancet. 1956 Aug 11;271(6937):261–contd. doi: 10.1016/s0140-6736(56)92077-3. [DOI] [PubMed] [Google Scholar]
- Schrag P. E., Gullett A. D. Byssinosis in cotton textile mills. Am Rev Respir Dis. 1970 Apr;101(4):497–503. doi: 10.1164/arrd.1970.101.4.497. [DOI] [PubMed] [Google Scholar]