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Work-related asthma: Ten most frequently reported agent categories associated with cases of work-related asthma, 1993–2008


n.o.s. - not otherwise specified


Each case may be associated with up to three putative agents.

Percentages are based on the number of cases (n=8,239).

Each category includes many agents. For the most commonly reported agents within each category presented in this figure see table reference number 2014AT09-05. Association of Occupational and Environmental Clinics lists some exposures in these categories as known asthmagens.

See Appendix for information about data sources and methods.


Provisional sentinel  surveillance data as of January 2012, reported by R. Harrison, J. Flattery, and J. Weinberg (California); L. Davis, E. Pechter, and K. Fitzsimmons (Massachusetts); K. Rosenman, MJ. Reilly, and M. Yoder (Michigan); and M. Lumia and A. Stephens (New Jersey).

Reference Number: 2014AF09-01(revised)

Date Posted: February 2015

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