Article Text

Download PDFPDF
Trends in incidence of occupational asthma
  1. Susan M Tarlo
  1. Department of Medicine, University of Toronto, Toronto Western Hospital, Toronto, Ontario, Canada
  1. Correspondence to Dr Susan M Tarlo, Toronto Western Hospital, EW7-449, 399 Bathurst St, Toronto, Ontario, Canada M5T 2S8; susan.tarlo{at}

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

Rates of silicosis and other pneumoconiosis have declined in the past several decades as control measures have reduced occupational dust exposures in settings such as underground mines and exposures to agents such as asbestos.1 Meanwhile, occupational asthma (OA) has been reported to be the most common chronic occupational lung disease in many developed countries, with epidemiological studies estimating an occupational cause to about 15% of all adult-onset asthma in the working population.2

As with all occupational diseases, OA is potentially preventable3: it mostly follows sensitisation to high-molecular or low-molecular weight sensitising agents in a susceptible subpopulation of exposed workers.4 Primary prevention (elimination or reduction of exposure in the workplace) effectively reduces OA. Although genetic and other host factors predispose to development of sensitisation and OA, knowledge of these factors is insufficient to screen out workers from exposure to specific sensitisers. Secondary prevention, when exposure to sensitisers cannot be eliminated, includes formal medical surveillance to detect affected workers early, at a time …

View Full Text


  • Competing interests None.

  • Provenance and peer review Commissioned; internally peer reviewed.

Linked Articles