Economics of Childhood Immunization
这篇教学笔记面向经济学原理课程，解释政府为何介入儿童免疫、美国现状及北爱尔兰与奥地利政策，重点用需求曲线和负价格概念分析经济激励如何影响接种行为。
Recent outbreaks of measles and other childhood diseases have put immunization policy on the national agenda. This teaching note on childhood immunization, intended for principles courses, discusses the rationale for government involvement, the situation in the United States, and the policies of Northern Ireland and Austria. It emphasizes (1) the use of financial incentives to motivate behavior, (2) the distinction between shifting and moving along the demand curve, and (3) the notion of negative prices (i.e., paying the customer to 'buy' the item). Students especially like the idea of the demand curve extending below the x-axis. Copyright 1994 by Oxford University Press.