National immigration health policy: existing policy, changing needs, and future directions.

Canada has a long history of welcoming immigrants and a longstanding immigration policy framework. The historic principles that govern immigration selection and processing also include regulatory policies in the area of health. Based on historical principles that pre-date Confederation, Canadian immigration health policy has remained relatively constant. Policies are based on the identification of specific individuals and the exclusion, if appropriate, of the affected individuals - an approach that continues today. During the past three decades, however, evolutionary changes in the patterns, volume and demography of immigration have created situations that may necessitate changes to existing policy frameworks. This paper reviews current immigration health policies and practices in Canada, describes the nature and impact of existing challenges, and proposes some alternatives for future consideration.