With the accelerating pace of new knowledge about occupational asthma, systematic epidemiological approaches have yielded important new insights into its clinical characteristics. Such questions as "what proportion of all cases of asthma are caused by occupational exposures?" and "is occupational asthma incidence rising?" can now be answered. Surveillance programmes estimate the number of expos...

Background: Occupational exposures do have a negative impact on the male reproductive system, but sometimes it is difficult to isolate a single insult. Workers can be exposed to a number of harmful physical, chemical and psychological factors in their working environment. During recent years, the various diseases and disorders caused by these stressors have drawn the attention of a number of re...

This paper describes how exposures received during routine and episodic non-occupational activities contribute to total noise exposure in a group of occupationally exposed workers. Two-hundred and sixty-six construction apprentices enrolled in a longitudinal hearing loss study and completed questionnaires at 1 yr of follow-up to determine their episodic activities (e.g. concert attendance, powe...