New York State Department of Health, Center for Environmental Health, Troy, NY 12180, USA.
Disaster Med Public Health Prep. 2009 Oct;3(3):158-62. doi: 10.1097/DMP.0b013e3181b877e8.
Drive-through mass vaccination clinics are an increasingly popular component of public health emergency response plans. One potential disadvantage, however, is the exposure of clinicians, volunteers, public health responders, and the public to carbon monoxide (CO) from vehicle exhaust emissions when clinics are held within garages or other enclosed structures.
CO levels were monitored during indoor drive-through clinics held on the same day at 2 separate locations in a rural upstate New York county. Each clinic was operated for 2 hours during which seasonal influenza vaccines were administered to county residents as they remained within their vehicles. At each location, vehicle engines remained operating indoors within multiple lanes of traffic. No mechanical ventilation was used, but wind speeds through the buildings were relatively strong and consistent. CO was measured at breathing-zone height throughout the clinic sessions using direct-reading instruments.
CO levels remained below detection for the majority of the clinic sessions. Short-term, high CO exposures, however, were found to be associated with a small number of individual vehicles that were in apparent disrepair.
The findings from this study indicate that CO exposures may be minimized by identifying and separately processing problematic vehicles before they enter the clinic. Direct reading CO monitors can help to identify these vehicles.
免下车大规模疫苗接种诊所是公共卫生应急计划中越来越受欢迎的组成部分。然而，一个潜在的缺点是，当诊所设在车库或其他封闭结构内时，临床医生、志愿者、公共卫生响应人员和公众会暴露于车辆尾气排放的一氧化碳（CO）中。
在纽约州北部一个农村县的 2 个不同地点，同一天进行室内免下车诊所时监测 CO 水平。每个诊所运营 2 小时，在此期间，为县居民接种季节性流感疫苗，他们留在车内。在每个地点，车辆发动机都在多条车道内室内运行。没有使用机械通风，但建筑物内的风速相对较强且一致。在整个诊所期间，使用直读仪器在呼吸区高度测量 CO。
在大多数诊所期间，CO 水平保持在检测限以下。然而，发现短期高 CO 暴露与少数明显损坏的个别车辆有关。
本研究结果表明，可以通过在进入诊所之前识别和单独处理有问题的车辆来尽量减少 CO 暴露。直接读数 CO 监测仪可以帮助识别这些车辆。
