The validity of test-negative design for assessment of typhoid conjugate vaccine protection: comparison of estimates by different study designs using data from a cluster-randomised controlled trial
Author:
Shuo Feng,Yiyuan Zhang,Farhana Khanam,Merryn Voysey,Virginia E Pitzer,Firdausi Qadri,John D Clemens,Andrew J Pollard,Xinxue Liu
Publication:
The Lancet Global Health
© 2025 The Author(s). Published by Elsevier Ltd.