Arrested development in Ancylostoma duodenale: course of a self-induced infection in man.
Am J Trop Med Hyg
; 23(5): 895-8, 1974 Sep.
Article
em En
| MEDLINE
| ID: mdl-4451228
ABSTRACT
The course of self-induced infection with about 100 Ancylostoma duodenale larvae was followed by twice-weekly blood and stool examinations. After a small initial increase, no further change in eosinophil counts occurred until the 33rd week of infection when they began to increase sharply. Seven weeks later, eggs were first observed in stools. Thus, in this infection, the prepatent period was five times the expected. It is suggested that a strain of A.duodenale exists which either 1) has an inherent, abnormally long prepatent period or 2) has a prepatent period which is susceptible to change depending upon the environmental conditions experienced by the free-living larvae. In either case, the third stage larvae probably enter a hypobiotic state within the host which lasts for about 8 months.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ancylostoma
/
Ancilostomíase
Limite:
Humans
Idioma:
En
Revista:
Am J Trop Med Hyg
Ano de publicação:
1974
Tipo de documento:
Article