Volume 10, Number 5, May 2004

Ring Vaccination and Smallpox Control

Mirjam Kretzschmar,* Susan van den Hof,* Jacco Wallinga,* and Jan van Wijngaarden†
*National Institute of Public Health and the Environment (RIVM), Bilthoven, the Netherlands; and †Inspectorate of Health Care, the Hague, the Netherlands

Figure 3. The distribution of A, the total number of infected persons excluding those infected contacts who were vaccinated on time to prevent disease, and B, the time to extinction for 500 simulation runs with the baseline intervention parameter values and a basic reproduction number of 5.23. For a basic reproduction number of 10.46 and an increase of the vaccination coverage in the casual contact ring to 80% in C, the distribution of the total number of infected persons, and in D, the distribution of the time to extinction is shown for 500 simulation runs.

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This page last reviewed April 1, 2004

Emerging Infectious Diseases Journal
National Center for Infectious Diseases
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