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Vaccine probe studies have emerged in the past 15 years as a useful way to characterise disease. By contrast, traditional studies of vaccines focus on defining the vaccine effectiveness or efficacy. The underlying basis for the vaccine probe approach is that the difference in disease burden between vaccinated and unvaccinated individuals can be ascribed to the vaccine-specific pathogen. Vaccine probe studies can increase understanding of a vaccine's public health value. For instance, even when a vaccine has a seemingly low efficacy, a high baseline disease incidence can lead to a large vaccine-preventable disease burden and thus that population-based vaccine introduction would be justified. So far, vaccines have been used as probes to characterise disease syndromes caused by Haemophilus influenzae type b, pneumococcus, rotavirus, and early infant influenza. However, vaccine probe studies have enormous potential and could be used more widely in epidemiology, for example, to define the vaccine-preventable burden of malaria, typhoid, paediatric influenza, and dengue, and to identify causal interactions between different pathogens.

Original publication

DOI

10.1016/S0140-6736(13)61682-7

Type

Journal article

Journal

Lancet

Publication Date

17/05/2014

Volume

383

Pages

1762 - 1770

Keywords

Communicable Disease Control, Communicable Diseases, Cost of Illness, Developing Countries, Humans, Influenza Vaccines, Influenza, Human, Pneumococcal Vaccines, Pneumonia, Pneumococcal, Randomized Controlled Trials as Topic, Research Design, Rotavirus Infections, Vaccines, Viral Vaccines