Extended analyses of datasets from past studies of cholera and typhoid fever

Epidemiology surveillance - Laboratory surveillance - Vaccines Bangladesh - South Korea completed

Project timeline: 01/11/2018 - 01/10/2022

Lead Researcher

Dr. John D. Clemens

Organisation / Institution

International Centre for Diarrhoeal Disease Research (icddr,b)


Bill & Melinda Gates Foundation

Project summary

The icddr,b and IVI have collaborated on multiple research projects addressing the epidemiology of vaccines for cholera. This is in addition to each institution`s individual work on cholera and typhoid fever. To date, papers with significant global health impact been published on these studies, yet, the papers are relatively few in number in relation to the size and richness of the data available from the studies. Computerized datasets from these projects have been cleaned, archived, and documented, and are available for analyses. These datasets thus constitute an important resource for further analyses and publications addressing critical issues related to control of cholera and typhoid by both vaccine and non-vaccine (WASH) measures.

The purpose of this proposal is to:

  • To answer scientific questions and publish manuscripts in the international scientific journals using existing computerized and curetted datasets for analyses of the epidemiology of cholera and typhoid, as well as the effectiveness of vaccine and WASH control measures for the control of these disease.
  • To form a working group consisting of both senior and junior scientists from each institution, together with selected experts from outside the institutions, to exploit the untapped existing computerized and curetted datasets.

We will achieve the objectives by forming working groups consisting of senior and junior scientists together with a steering committee composed of selected experts from outside the institutions, to analyze the existing datasets and to submit manuscripts based on these analyses for publication in the international scientific literature. We will also present the findings at international scientific meetings and forums. In addition, after completion of the proposal in the 2 year period targeted for the study, the results will be shared with Institute for Health Metrics and Evaluation (IHME), as necessary, to strengthen the cholera and typhoid fever disease burden data.

Lay summary

The vaccine effectiveness will be measured by comparing the ratio of odds of vaccination in the cholera positive patients and odds of vaccination in the cholera negative patients.


Firdausi Qadri, (icddr,b)
Md. Khalequzzaman, (icddr,b)
Fahima Chowdhury, (icddr,b)
Ashraful Islam Khan, (icddr,b)
Dr Jerome H Kim, International Vaccine Institute (IVI)
Dr Florian Marks, International Vaccine Institute (IVI)
Dr Yun Chon, International Vaccine Institute (IVI)
Deok Ryun Kim, International Vaccine Institute (IVI)
Justin Im, International Vaccine Institute (IVI)
Md. Taufiqul Islam, (icddr,b)

Key Collaborators

International Vaccine Institute (IVI)