Tim's Poison Ivy - July 2009 - Show Me a Memory
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Poison Ivy / Poison Oak / Poison Sumac:
- Most common allergy in the country claiming half the population 
- Sensitivity to urushiol can develop at any time 
- Solutions or cures are those that annihilate urushiol 
- Everyone appears to react slightly different to all the remedies. 
- Covered by workers compensation in some states (CA, for example) 
- First published records of poison ivy in North America date back to 1600s 
- Poison Ivy coined by Captain John Smith in 1609 
- Western Poison Oak discovered by David Douglas (1799-1834) on Vancouver Island. Douglas fir also named after him.

Source:  http://poisonivy.aesir.com