Nearly half of all adult asthma cases – 48 percent – might be related to work – and therefore could be preventable. That’s according to a study published in December in the CDC’s MMWR, which found that as many as 2.7 million U.S. workers might have asthma caused by or exacerbated by workplace conditions.

The study used data from the 2006–2007 adult Behavioral Risk Factor Surveillance System (BRFSS) Asthma Call-back Survey (ACBS) to quantify potential occupationally-associated asthma cases and to identify the workers most at risk, by industry and state. Among the five occupations with the highest current asthma prevalence, office and administrative support was identified in 16 of the 21 states, health care practitioners and technical in 15 states, and sales and related in 13 states.

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