Up to 70-85% of Americans are susceptible urushiol oil found in poison ivy, sumac or oak
35 and 50 million people annually develop severe rhus dermatitis from exposure to urushiol (Dermatology Insights, 4 (1), 26, 2003, Am Acad Derm)
25% severe contact dermatitis, Severe rash with 1 nanogram!
Seek medical treatment or advice
Severe discomfort
Potential infection
Face, arm and genital swelling
Treatment with antibiotics and steroid
Poison ivy increasing with rising CO2 levels.
(Main, D. Why poison ivy is an unlikely climate change winner, National Geographic Published April 18, 2023)
Increasingly ‘‘toxic’’, potentially affecting global forest dynamics and human health.
(Mohan, J. et al, Biomass and toxicity responses of poison ivy (Toxicodendron radicans) to elevated atmospheric CO2, PNAS, 103 (24): 9086–9089, 2006. www.pnas.org/cgi/doi/10.1073/pnas.0602392103)
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