There is a growing body of literature that looks at the causes of below-replacement fertility in developed countries. While the variation in childbearing patterns across countries and between socio-economic groups within a country has been studied in detail, little is known about the differences...

In the paper basic epidemiological indicators, produced by an aging population of vectors, are calculated. In the study we follow two lines: calculations for demographically structured population and individual life-history approach. We discuss the advantages and limitations of these approaches...