農業労働者の山火事曝露に関する大規模調査(Most of Wine Country’s agricultural workers have been exposed to wildfires, new survey finds)

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2025-10-20 カリフォルニア大学バークレー校(UCB)

カリフォルニア大学バークレー校の公衆衛生学部と人権センターの研究チームは、ソノマ郡を中心とする農業労働者約1000人を対象にした大規模調査で、約75%が2017年以降に山火事の発生下で働いた経験があると報告したと発表した。多くの労働者が頭痛や喉の痛みを訴え、約半数は医療保険を持たず、生活費のために体調不良でも作業を続けていたという。報告書では、避難区域でも作業を続けることを認める「農業アクセス認証カード制度(Ag Pass)」が健康被害を助長する可能性を指摘し、政策改善を提言。研究成果は『Journal of Agromedicine』誌に掲載された。

<関連情報>

カリフォルニア州ソノマ郡における山火事発生時の「農業パス」プログラムと農業労働者の体験の評価 Evaluation of “Agricultural Pass” Program and Farmworkers’ Experiences Working During Wildfires in Sonoma County, California

Carly Hyland,Isabella Kaser,Moncerrat Hernández,Dafne Cruz Rodriguez & Linda Gordon
Journal of Agromedicine  Published:19 Oct 2025
DOI:https://doi.org/10.1080/1059924X.2025.2569371

農業労働者の山火事曝露に関する大規模調査(Most of Wine Country’s agricultural workers have been exposed to wildfires, new survey finds)

ABSTRACT

Objectives

Farmworkers are disproportionately exposed to and impacted by wildfire smoke, which will continue to worsen with climate change. Sonoma County is a winegrowing region in northern California that experienced record-breaking wildfires from 2017 to 2020; in 2022 the County passed an “Ag Pass” program that allows farm owners and full-time agricultural employees potential access to evacuated areas during disasters such as a wildfire. The goals of this study were to: 1) evaluate farmworkers’ experiences working during wildfires, 2) examine implications of the Ag Pass program for farmworker health and safety, and 3) develop policy recommendations to safeguard farmworkers’ health during wildfires.

Methods

We worked with a local community engagement team to administer surveys and conduct open-ended interviews with farmworkers in Sonoma County to examine their: 1) understanding of the Ag Pass program; 2) previous experiences working in agriculture during wildfires; 3) desired resources and training about wildfire health and safety; 4) organizations they would feel most comfortable interacting to receive this training; and 5) other concerns related to working during wildfires.

Results

Of the 1,011 survey participants, 763 (75.5%) had worked in agriculture during a wildfire in Sonoma County since 2017; of these, 507 (66.5%) reported experiencing health impacts such as a headache (74.9%), sore throat (76.0%), and eye irritation (83.1%). Over 50% of participants who reported adverse health did not have health insurance, and many reported continuing to work while feeling ill to avoid losing income or their jobs. The most consistent theme throughout the surveys and interviews was that farmworkers believed it necessary to work in hazardous conditions (e.g. during active wildfires and poor air quality) to be able to pay for basic needs such as housing and groceries.

Conclusion

Our analysis identified gaps in the protection of farmworkers during wildfires in Sonoma County and areas for improvement in the Ag Pass program, including consideration of air quality and heat levels when the Ag Pass may be activated; health training requirements for program applicants; increased collaborations with trusted organizations to deliver health and safety information; and improved communication with workers about evacuation routes and wildfire notifications at the workplace.

医療・健康
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