EXCESS PNEUMONIA-INFLUENZA MORTALITY BY AGE AND SEX IN THREE MAJOR INFLUENZA A2 EPIDEMICS UNITED STATES 1957-58 1960 AND 1963
EXCESS PNEUMONIA-INFLUENZA MORTALITY BY AGE AND SEX IN THREE MAJOR INFLUENZA A2 EPIDEMICS UNITED STATES 1957-58 1960 AND 1963
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DOI：
10.1093/oxfordjournals.aje.a120753
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发表时间：
1967-01-01
影响因子：
5
通讯作者：
HOUSEWOR.WJ
中科院分区：
文献类型：
--
作者：
SERFLING, RE;SHERMAN, IL;HOUSEWOR.WJ
使用先前描述的但适合电子计算机计算的方法，计算了 1957-1963 年期间每次流感流行的预期（非流行）率。详细分析了1957年10月至1958年3月、1960年1月至3月和1963年1月至3月发生的3次大型甲型2型流感流行期间的超额死亡率。 1957年秋季，15-19岁年龄组的相对超额死亡率达到峰值，然后在随后的1960年和1963年的流行病中显着下降。1957年5-14岁年龄组的相对超额死亡率有所下降，但在随后的1960年和1963年的流行病中也观察到类似的下降。在20-44岁年龄组中，这种模式具有相同的形式，但幅度较小。发音。在年龄较大的群体中，连续流行病之间的差异较小。研究结果与其他对某些流行病的现场调查、监测数据和血清学计划的研究结果一致。对按年龄划分的超额死亡率的性别差异进行的检查显示，1-44 岁年龄段女性的超额死亡率略有较高的趋势。在所有其他因素中，男性的发病率有较高的趋势。
Using methods previously described, but adapted to electronic computer calculation, expected (non-epidemic) rates were calculated for each influenza epidemic during 1957-1963. Excess mortality during 3 large influenza A2 epidemics, occurring in October-March 1957-1958, January-March 1960 and January-March 1963 were analyzed in detail. In the fall of 1957, relative excess mortality reached a peak in the 15-19 year age group, then declined markedly in the succeeding epidemics of 1960 and 1963. In the 5-14 year age group relative excess mortality was somewhat lower in 1957, but a similar decrease was observed in the subsequent epidemics of 1960 and 1963. In the age group 20-44 the pattern was of the same form but less pronounced. Among older age groups the differences between successive epidemics were smaller. The findings were in agreement with other studies field investigations of certain epidemics, surveillance data and a serologic program. An examination of sex differences in excess mortality by age revealed a slight tendency toward higher levels in females in the age groups 1-44. Among all others the tendency was toward higher rates in males.