Gilmour N J, Donachie W, Fraser J, Quirie M
Res Vet Sci. 1984 Nov;37(3):374-5.
A 100-fold reduction in the numbers of organisms in an aerosol of Pasteurella haemolytica used to infect specific pathogen-free lambs did not alter the number of cases of pneumonia which resulted. In a separate experiment a further 10-fold reduction in the number of organisms in the aerosol did not cause fewer cases of pneumonia.
用于感染无特定病原体羔羊的溶血巴斯德氏菌气溶胶中微生物数量减少100倍，并未改变由此导致的肺炎病例数量。在另一项实验中，气溶胶中微生物数量再减少10倍，也并未使肺炎病例减少。
