THE PREMISE

One often hears that money cannot buy love, good health or happiness. Like most aphorisms, these sayings bear a kernel of truth, but unfortunately as far as health is concerned data from most of the world demonstrate the opposite (Fig. 1). Public health officials would say that the average lifespan decreases precipitously as the per capita gross natural product falls below $5000. If this were a laboratory experiment, the scientist would say that the mean time to death on the vertical axis increases rapidly as the ‘treatment’ on the horizontal increases. The role for public health in the traditional sense is to convince uninterested rulers, populations with wellestablished cultural attitudes, and international donors to alter public health practices and allocation of money to obtain a shift in position of their country to an improved longevity.

The relationship between wealth and lifespan has consequences for our ideas about emerging infections and how we may best deal with them. The countries at the left side of the graph obviously do not have an adequate health infrastructure and it will be difficult to establish surveillance for monitoring and recognizing emerging diseases because of the lack of diagnostic capability and communications. Their efforts will best be directed to implementing simple, inexpensive, high-yield procedures such as reliable stool cultures or malaria smears. Rich countries requesting cooperation in surveillance should be cognizant of the life and death financial situation these countries face. Nevertheless, we also recognize that the poorer countries, particularly in tropical climes, may be a disproportionate source of ‘new’ emerging threats.