Grist N R
Postgrad Med J. 1973 Nov;49(577):807-11. doi: 10.1136/pgmj.49.577.807.
Ninety-six strains of influenza A and 113 influenza B were found in the two MRC/PHLS surveys. In the general practitioner survey the majority of strains were isolated from cases diagnosed as influenza but in hospital most came from cases diagnosed as having other respiratory infections. In the latter survey isolation rates were higher in upper respiratory tract infection than in lower ones but in the general practice survey this trend was reversed. Influenza-like symptoms tended to increase with age, while coryza and vomiting was commoner in the younger age groups. The frequency of influenza virus infections found in the survey is compared with those found in Glasgow over the last decade and their effect on the incidence of lower respiratory tract infection discussed.
在医学研究委员会/公共卫生实验室服务处（MRC/PHLS）的两项调查中，发现了96株甲型流感病毒和113株乙型流感病毒。在全科医生调查中，大多数毒株是从被诊断为流感的病例中分离出来的，但在医院里，大多数毒株来自被诊断为患有其他呼吸道感染的病例。在后一项调查中，上呼吸道感染的分离率高于下呼吸道感染，但在全科医生调查中，这种趋势相反。流感样症状往往随着年龄的增长而增加，而鼻黏膜炎和呕吐在较年轻的年龄组中更为常见。将调查中发现的流感病毒感染频率与过去十年在格拉斯哥发现的频率进行了比较，并讨论了它们对下呼吸道感染发病率的影响。
