Analysis of the Disease Spread in a Livestock Building Using Tracer Gas Experiment
학회지: 한국농공학회논문집 54(3), 37 - 45쪽.
저자: 송상현, 이인복, 권경석, 하태환, J. P. Bitog, 홍세운, 서일환, 문운경, 김연주, 최은진
개요
Recently, the livestock industry in Korea was heavily affected by the outbreak of official livestock diseases such as foot and mouse disease, high pathogenic avian influenza, swine influenza, and so on. It has been established that these diseases are being spread through direct contact, droplet and airborne transmission. Among these transmissions, airborne transmission is very complex in conducting field investigation due to the invisibility of the pathogens and unstable weather conditions. In this study, the airborne transmission was thoroughly investigated inside a pig house by conducting tracer gas (CO2) experiment because experiment with real pathogen is limited and dangerous. This is possible as it can be assumed that the flow is similar pattern very fine particles and gas. In the experiment, the ventilation structure as well as the location of gas emission were varied. The CO2 detection sensors were installed at 0.5 and 1.3 m height from the floor surface. The tracer gas level was measured every second. Results revealed that the direction of spread can be determined by the response time. Response time refers to the time to reach 150 ppm from the gas emission source at each measuring points. The location of the main flow as well as the gas emission was also found to be very important factor causing the spread.
Download Link :
https://www.researchgate.net/profile/Jessie_Pascual_Bitog/publication/263644324_Analysis_of_the_Disease_
Spread_in_a_Livestock_Building_Using_Tracer_Gas_Experiment/links/540f23a60cf2df04e75a2646.pdf