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Health Economics 2009 Oct 8; [Epub ahead of print]. Address for correspondence: Anthony T. Newall, School of Public Health and Community Medicine, The University of New South Wales, Samuals Bldg, Sydney, New South Wales 2052, Australia; email: a.newall@unsw. edu.au The opinions expressed by authors contributing to this journal do not necessarily reﬂect the opinions of the Centers for Disease Con- trol and Prevention or the institutions with which the authors are afﬁliated. 230 Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 16, No. 2, February 2010