The population biology and control of Ascaris lumbricoides in a rural community in Iran
- 1 January 1982
- journal article
- Published by Oxford University Press (OUP) in Transactions of the Royal Society of Tropical Medicine and Hygiene
- Vol. 76 (2), 187-197
- https://doi.org/10.1016/0035-9203(82)90272-3
Abstract
Adults of Ascaris lumbricoides were recovered from 252 persons in the village of Jazin near Esfahan, Iran after treatment with pyrantel pamoate. This horizontal study provides information on age-specific prevalence rates, intensities of infection, frequency distributions, sex ratios and eggs per gram of stool at different parasite intensities. Recruitment of A. lumbricoides was then monitored at 7, 30, 60, 90 and 365 days after treatment in 110 persons. A separate sample population was examined at monthly intervals and, in addition, the stool of each member of a nine-person family was examined for 10 consecutive days. These data are analysed and used to describe the dynamics of transmissions and recruitment of A. lumbricoides in Jazin. The population dynamics of ascariasis are discussed in the context of R the basic reproductive rate of the parasite. The relationships of R with frequency distributions, prevalencies and worm burdens are discussed. Because of the considerable potential of A. lumbricoides to re-infect man in endemic areas, it is shown that it will be difficult to eradicate ascariasis by the use of chemotherapy, even when drugs with a high efficacy are used repeatedly.Keywords
This publication has 17 references indexed in Scilit:
- The population dynamics of microparasites and their invertebrate hostsPhilosophical Transactions of the Royal Society of London. B, Biological Sciences, 1981
- Population biology of infectious diseases: Part INature, 1979
- Regulation and Stability of Host-Parasite Population Interactions: I. Regulatory ProcessesJournal of Animal Ecology, 1978
- Epidemiology and Mass-Treatment of Ascariasis in Six Rural Communities in Central Iran *The American Journal of Tropical Medicine and Hygiene, 1977
- Fitting Nonlinear Models to Biological Data by Marquardt's AlgorithmEcology, 1970
- L’irrégularité de la ponte d’Ascaris lumbricoidesAnnales de Parasitologie Humaine et Comparée, 1970
- THE PREVALENCE OF INTESTINAL HELMINTHS IN RELIGIOUS GROUPS OF A RURAL COMMUNITY NEAR CALCUTTA1American Journal of Epidemiology, 1968
- The dynamics of helminth infections, with special reference to schistosomesTransactions of the Royal Society of Tropical Medicine and Hygiene, 1965
- Fitting the Negative Binomial Distribution to Biological DataBiometrics, 1953
- The Egg Production of Ascaris lumbricoidesJournal of Parasitology, 1927