Understanding risk perceptions to enhance communication about human-wildlife interactions and the impacts of zoonotic disease.

Inclusion of wildlife in the concept of One Health is important for two primary reasons: (1) the physical health of humans, domesticated animals, and wildlife is linked inextricably through shared diseases, and (2) humans' emotional well-being can be affected by their perceptions of animal health. Although an explicit premise of the One Health Initiative is that healthy wildlife contribute to human health, and vice versa, the initiative also suggests implicitly that wildlife may pose threats to human health through zoonotic disease transmission. As people learn more about One Health, an important question surfaces: How will they react to communications carrying the message that human health and wildlife health are linked? In the absence of adequate relevant research data, we recommend caution in the production and dissemination of One Health messages because of possible unintended or collateral effects.

Park rangers as public health educators: the Public Health in the Parks Grants Initiative.

Health education in nontraditional settings can supplement messages received in more traditional venues, such as schools and health care facilities, and can reach new populations. In 2007, the US National Park Service awarded one-time seed grants of $10 000 or less to 16 parks in 16 states to fund the development of public health-focused programs for visitors. These programs used a wide variety of formats and addressed topics such as air pollution, prevention of vector-borne diseases, and promotion of physical activity in the parks.

Primary pneumonic plague contracted from a mountain lion carcass.

Background: Primary pneumonic plague is a rare but often fatal form of Yersinia pestis infection that results from direct inhalation of bacteria and is potentially transmissible from person to person. We describe a case of primary pneumonic plague in a wildlife biologist who was found deceased in his residence 1 week after conducting a necropsy on a mountain lion.

Methods: To determine cause of death, a postmortem examination was conducted, and friends and colleagues were interviewed.

Persistence of Yersinia pestis in soil under natural conditions.

As part of a fatal human plague case investigation, we showed that the plague bacterium, Yersinia pestis, can survive for at least 24 days in contaminated soil under natural conditions. These results have implications for defining plague foci, persistence, transmission, and bioremediation after a natural or intentional exposure to Y. pestis.

A systems-based food safety evaluation: an experimental approach.

Food establishments are complex systems with inputs, subsystems, underlying forces that affect the system, outputs, and feedback. Building on past exploration of the hazard analysis critical control point concept and Ludwig von Bertalanffy General Systems Theory, the National Park Service (NPS) is attempting to translate these ideas into a realistic field assessment of food service establishments and to use information gathered by these methods in efforts to improve food safety. Over the course of the last two years, an experimental systems-based methodology has been drafted, developed, and tested by the NPS Public Health Program.