The objective was to evaluate trends in marijuana exposures reported to the Colorado regional poison centre (RPC). Human exposures cases from the Colorado RPC obtained from 1 January 2000 through 31 December 2018 using generic marijuana exposure codes. There were 2221 marijuana exposures, with an increase in exposures by 11.2 cases per year (p<0.0001). Annual cases remained steady since 2014 (p=0.22), with a 19.4% increase in 2018 compared with 2017. Since 2014, the largest increase was in children age 0–8 years (p<0.0001). Edible marijuana exposures increased by 9.6 exposures per year from 2015 to 2018 (p=0.04). After observing an increase in Colorado RPC marijuana exposure cases in 2010 and 2014, annual exposures have been stable through 2017, with the first increase in legalised recreational sales era in 2018. There are specific concerns for the paediatric population and exposures involving edibles, as these cases continue to increase.
- public health
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