Article

Design and evaluation of prophylactic interventions using infectious disease incidence data from close contact groups

Harvard University, Cambridge, Massachusetts, United States
Journal of the Royal Statistical Society Series C Applied Statistics (Impact Factor: 1.42). 04/2006; 55(3):317 - 330. DOI: 10.1111/j.1467-9876.2006.00539.x
Source: PubMed

ABSTRACT   Prophylaxis of contacts of infectious cases such as household members and treatment of infectious cases are methods to prevent the spread of infectious diseases. We develop a method based on maximum likelihood to estimate the efficacy of such interventions and the transmission probabilities. We consider both the design with prospective follow-up of close contact groups and the design with ascertainment of close contact groups by an index case as well as randomization by groups and by individuals. We compare the designs by using simulations. We estimate the efficacy of the influenza antiviral agent oseltamivir in reducing susceptibility and infectiousness in two case-ascertained household trials.

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