提华纳河谷健康研究公开征询：最高25万美元、查 Imperial Beach 等社区疾病率
位于加州圣迭戈县南端的提华纳河谷，长期受跨境污水流入之苦，当地居民的健康影响究竟有多大，圣迭戈县政府决定出资请研究者查清。县府 10 月 8 日发布公开征询，寻找研究团队对河谷社区开展健康研究，征询报价已于 10 月 30 日截止，县府为这项研究准备了 20 万至 25 万美元的经费。
按县府的说明，研究将比对 Imperial Beach、Nestor、San Ysidro 等河谷社区与全县其他地区的疾病率，看看与污水暴露相关的疾病在这些社区是否更高。研究将接续美国疾病控制与预防中心（CDC）此前在当地开展的 CASPER 入户调查——那项调查覆盖的样本代表约 41,000 户河谷家庭，调查结果预计今年年底公布。
提华纳河发源于墨西哥、向北跨境流入美国，在 Imperial Beach 附近注入太平洋。多年来，河中夹带的污水多次导致 Imperial Beach 海滩关闭，河谷居民也长期投诉异味与呼吸道不适。县府表示，这项研究意在拿出本地的疾病数据，为后续的治理投入与公共卫生安排提供依据。
Tijuana River Valley Health Study Seeks Researchers: Up to $250,000 to Examine Disease Rates in Border Communities
For years, sewage flowing across the border in the Tijuana River has plagued the valley at the southern end of California's San Diego County. Now the county is paying researchers to establish what it has done to residents' health. On October 8, the County of San Diego issued a public solicitation for a research team to study health in Tijuana River Valley communities; quotes were due October 30, and the county has budgeted $200,000 to $250,000 for the study.
Under the county's description, the study will compare disease rates in valley communities — including Imperial Beach, Nestor and San Ysidro — with the rest of the county, to test whether illnesses associated with sewage exposure are more common there. It will build on the CDC's CASPER household survey conducted in the valley, whose sample represents about 41,000 households; the survey results are expected by the end of the year.
The Tijuana River rises in Mexico, crosses the border into the United States and reaches the Pacific near Imperial Beach. Sewage in the river has repeatedly closed Imperial Beach's beaches, and valley residents have long complained of odors and respiratory problems. The county says the study is intended to produce local disease data to guide cleanup investment and public health planning.
来源：GSM·美国（原文链接）
图片来源：图：圣迭戈县南端 Imperial Beach 附近的提华纳河口湿地。图片：Osbornb，CC BY，经 Wikimedia Commons。 / The Tijuana River estuary near Imperial Beach. Photo: Osbornb, CC BY, via Wikimedia Commons.
