Wagner V, Andrlíková J, Wagnerová M, Schön E
J Hyg Epidemiol Microbiol Immunol. 1975;19(2):237-45.
Certain significant differences were found between the mean IgG levels in four different population groups. No differences were found in the IgA and IgM classes. The highest IgG levels were found in food workers and the lowest levels in coal-miners working at the face. Surface mine employees and employees just taken on for underground work had intermediate values. On dividing the population groups into age sub-groups, significant differences were found between some of the latter. Physical stress, differences in exposure to infections, the influence of the macro- and micro-climate and spontaneous and controlled selection for given occupations are regarded as possible causes of the observed differences.
在四个不同人群组的平均IgG水平之间发现了某些显著差异。在IgA和IgM类别中未发现差异。食品工人的IgG水平最高，而在掌子面工作的煤矿工人中IgG水平最低。露天矿员工和刚从事地下工作的员工的IgG水平处于中间值。将人群组划分为年龄亚组后，在其中一些亚组之间发现了显著差异。身体压力、接触感染的差异、宏观和微观气候的影响以及特定职业的自发和有控制的选择被认为是观察到的差异的可能原因。
