Rimi Nadia Ali, Fahad Md Habibullah, Clark Andrew, Sultana Rebeca, Hossain Kamal, Saifullah Md Khaled, Shanta Ireen Sultana, Swayne David E, Hassan Md Zakiul, Mortaza Syed Mohammad Golam, Swarna Sayeda Tasnuva, Giasuddin Md, LeBoa Christopher, Rahman M Sajjadur, Biswas Debashish, Rahman Mahbubur, Kile James C, Kennedy Erin D, Lindsley William G
Infectious Diseases Division, icddr,b, Dhaka, Bangladesh.
School of Biodiversity, One Health and Veterinary Medicine (SBOVM), University of Glasgow, Glasgow, Scotland, UK.
Build Environ. 2025 Mar;271. doi: 10.1016/j.buildenv.2025.112621.
Influenza viruses can be aerosolized when slaughtering infected chickens, which increases the risk of zoonotic transmission. We conducted pilot experiments to measure the concentrations of airborne particles <2.5 μm during slaughtering and defeathering of chickens to help identify methods that can minimize workers' exposure to potentially hazardous aerosol particles. By using two types of airborne particle monitors stationed at different heights and angles in a controlled environment, we measured aerosolized particulate matters during exsanguination of 10 slaughtered chickens and use of a mechanical device for defeathering 10 chickens. For the slaughtering experiments, the median particle concentrations at 148 cm height were 67 μg/m (IQR 44-121) with a baseline count 10 μg/m (IQR 10-10) for the Particle and Temperature Sensor + (PATS+) monitors and 34 μg/m (IQR 34-64) with a baseline count 25 μg/m (IQR 16-44) for the SidePak monitor. For the defeathering experiments, the median particle concentrations recorded by the PATS+ monitors were not significantly different between 148 cm (41 μg/m, IQR 29-49; baseline 12 μg/m, IQR 10-19) and 107 cm height (37 μg/m, IQR 29-44; baseline 13 μg/m, IQR 10-22). Our protocol can be used to test the generation of airborne particles that are <2.5 μm during different slaughtering and defeathering techniques used in the live bird markets to identify procedures that produce the lowest concentrations of small aerosol particles.
宰杀感染禽流感病毒的鸡时，病毒可形成气溶胶，从而增加人畜共患病传播的风险。我们进行了试点实验，以测量鸡宰杀和拔毛过程中空气动力学直径小于2.5μm的颗粒物浓度，从而确定可将工人暴露于潜在有害气溶胶颗粒的风险降至最低的方法。在可控环境中，我们使用两台安装在不同高度和角度的空气颗粒物监测仪，测量了10只待宰鸡放血过程及使用机械装置为10只鸡拔毛过程中形成的气溶胶颗粒物。在宰杀实验中，对于颗粒物与温度传感器升级版（PATS+）监测仪，在148厘米高度处，颗粒物浓度中位数为67μg/m³（四分位距44 - 121），基线计数为10μg/m³（四分位距10 - 10）；对于SidePak监测仪，在148厘米高度处，颗粒物浓度中位数为34μg/m³（四分位距34 - 64），基线计数为25μg/m³（四分位距16 - 44）。在拔毛实验中，PATS+监测仪记录的在148厘米高度（41μg/m³，四分位距29 - 49；基线12μg/m³，四分位距10 - 19）和107厘米高度（37μg/m³，四分位距29 - 44；基线13μg/m³，四分位距10 - 22）的颗粒物浓度中位数无显著差异。我们的方案可用于测试活禽市场不同宰杀和拔毛技术过程中空气动力学直径小于2.5μm的空气颗粒物的产生情况，以确定产生小气溶胶颗粒浓度最低的操作程序。
