Using social contact data to improve the overall effect estimate of a cluster-randomized influenza vaccination program in Senegal.
Using social contact data to improve the overall effect estimate of a cluster-randomized influenza vaccination program in Senegal.
复制标题
使用社会接触数据来改善塞内加尔的聚类随机流感疫苗接种计划的总体效果估计。
DOI:
10.1111/rssc.12522
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发表时间:
2022-01
影响因子:
1.6
通讯作者:
Elizabeth Halloran, M.
中科院分区:
文献类型:
--
作者:
Potter, Gail E.;Carnegie, Nicole Bohme;Sugimoto, Jonathan D.;Diallo, Aldiouma;Victor, John C.;Neuzil, Kathleen M.;Elizabeth Halloran, M.
关键词:
This study estimates the overall effect of two influenza vaccination programs consecutively administered in a cluster-randomized trial in western Senegal over the course of two influenza seasons from 2009–2011. We apply cutting-edge methodology combining social contact data with infection data to reduce bias in estimation arising from contamination between clusters. Our time-varying estimates reveal a reduction in seasonal influenza from the intervention and a nonsignificant increase in H1N1 pandemic influenza. We estimate an additive change in overall cumulative incidence (which was 6.13% in the control arm) of −0.68 percentage points during Year 1 of the study (95% CI: −2.53, 1.18). When H1N1 pandemic infections were excluded from analysis, the estimated change was −1.45 percentage points and was significant (95% CI, −2.81, −0.08). Because cross-cluster contamination was low (0–3% of contacts for most villages), an estimator assuming no contamination was only slightly attenuated (−0.65 percentage points). These findings are encouraging for studies carefully designed to minimize spillover. Further work is needed to estimate contamination – and its effect on estimation – in a variety of settings.
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