Assessment of vaccine herd protection in a cluster-randomised trial of Vi conjugate vaccine against typhoid fever: results of further analysis
<p><strong>Background: </strong>A cluster-randomised trial of Vi-tetanus toxoid (Vi-TT) conjugate vaccine conducted in urban Bangladeshi children found a high level of direct protection by Vi-TT but no significant vaccine herd protection. We reassessed the trial using a &a...
| Main Authors: | , , , , , , , , |
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| 格式: | Journal article |
| 语言: | English |
| 出版: |
Elsevier
2023
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