Estola T, Mäkelä P, Hovi T
J Hyg (Lond). 1979 Aug;83(1):59-67. doi: 10.1017/s0022172400025821.
The effect of artificial air-ionization on air-borne transmission of Newcastle disease virus (NDV) infection in chickens was studied in an isolated system consisting of two side-by-side cages with solid walls and a wire-gauze roof. During a 3-week observation period more than 90% of the uninoculated indicator chickens, housed in one of the cages, contracted the virus shed to the air by the NDV-inoculated, diseased birds in the neighbouring cage. This air-borne transmission of NDV was completely prevented by increasing the ion concentration in the test room by a constant negative corona discharge above the wire-gauze roof. On the other hand, spreading of the infection within a group of chickens housed in a single cage was not affected by air ionization. These and other results suggest that artificial air-ionization may protect animals from certain air-borne infections by interfering with microbial aerosol formation and/or by facilitating their decay.
在一个由两个并排且有实心壁和金属丝网屋顶的笼子组成的隔离系统中，研究了人工空气电离对鸡新城疫病毒（NDV）空气传播感染的影响。在为期3周的观察期内，饲养在其中一个笼子里的90%以上未接种的指示鸡感染了病毒，这些病毒是由相邻笼子里接种了NDV的患病鸡传播到空气中的。通过在金属丝网屋顶上方持续进行负电晕放电来增加测试室内的离子浓度，可完全防止NDV的这种空气传播。另一方面，饲养在单个笼子里的一组鸡之间的感染传播不受空气电离的影响。这些以及其他结果表明，人工空气电离可能通过干扰微生物气溶胶的形成和/或促进其衰变来保护动物免受某些空气传播感染。
