FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2165318672> ?p ?o ?g. }

• W2165318672 abstract "SUMMARY The prevalence of schistosome infections in intermediate host snails varies with snail age. The relationship between age and prevalence, the age—prevalence curve, is complex and may vary in space and time, and among parasite—host species. Field studies show that the shape of the age—prevalence curve may be seasonally variable, and that at some times there may be a decline in prevalence among older snails. This paper attempts to explain these observations in terms of the underlying epidemiological processes. A discrete-time version of Muench's catalytic model for age-dependent infection is developed. Model simulations were carried out using life-history and epidemiological parameters derived from studies of Schistosoma haematobium—Bulinus globusus in Zimbabwe. Analysis of model behaviour identifies aspects of the schistosome— snail interaction that affect the shape of the age—prevalence curve. The following features can result in a decline in prevalence among older snails. (1) A decrease in the survival rate of patent infected snails with age. (2) A decrease in the force of infection with age. (3) A high rate of loss of infection. (4) A heterogeneity in the snail population such that the probability of infection is correlated with snail fecundity. (This would occur if there existed a spatial correlation between force of infection and fecundity, or if there were a correlation between fecundity and susceptibility.) The evidence for the occurrence of these features in the field is assessed. Survival rate is related more closely to the duration of patent infection than to age per se . The evidence for age-dependent force of infection is equivocal. Significant loss-of-infection rates have yet to be demonstrated. Heterogeneities in force of infection and fecundity have been reported and, for the Zimbabwe data, this mechanism can explain seasonally in the age—prevalence curve as a function of known seasonal variation in the force of infection and snail fecundity." @default.
• W2165318672 created "2016-06-24" @default.
• W2165318672 creator A5010023312 @default.
• W2165318672 date "1989-08-01" @default.
• W2165318672 modified "2023-09-25" @default.
• W2165318672 title "On the interpretation of age—prevalence curves for schistosome infections of host snails" @default.
• W2165318672 cites W1995243918 @default.
• W2165318672 cites W1995619653 @default.
• W2165318672 cites W2001231633 @default.
• W2165318672 cites W2003548468 @default.
• W2165318672 cites W2004431335 @default.
• W2165318672 cites W2056712268 @default.
• W2165318672 cites W2071720443 @default.
• W2165318672 cites W2096203972 @default.
• W2165318672 cites W2144077255 @default.
• W2165318672 cites W2170484622 @default.
• W2165318672 cites W2239536791 @default.
• W2165318672 cites W2248731343 @default.
• W2165318672 cites W2267844448 @default.
• W2165318672 cites W2270282167 @default.
• W2165318672 cites W2282600633 @default.
• W2165318672 cites W2314922059 @default.
• W2165318672 cites W2328124658 @default.
• W2165318672 cites W2413112355 @default.
• W2165318672 doi "https://doi.org/10.1017/s0031182000061011" @default.
• W2165318672 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/2797871" @default.
• W2165318672 hasPublicationYear "1989" @default.
• W2165318672 type Work @default.
• W2165318672 sameAs 2165318672 @default.
• W2165318672 citedByCount "21" @default.
• W2165318672 countsByYear W21653186722013 @default.
• W2165318672 countsByYear W21653186722018 @default.
• W2165318672 countsByYear W21653186722019 @default.
• W2165318672 countsByYear W21653186722020 @default.
• W2165318672 crossrefType "journal-article" @default.
• W2165318672 hasAuthorship W2165318672A5010023312 @default.
• W2165318672 hasConcept C126831891 @default.
• W2165318672 hasConcept C144024400 @default.
• W2165318672 hasConcept C149923435 @default.
• W2165318672 hasConcept C165901193 @default.
• W2165318672 hasConcept C18903297 @default.
• W2165318672 hasConcept C201997182 @default.
• W2165318672 hasConcept C2776225656 @default.
• W2165318672 hasConcept C2777445151 @default.
• W2165318672 hasConcept C2779965526 @default.
• W2165318672 hasConcept C2908647359 @default.
• W2165318672 hasConcept C2986834420 @default.
• W2165318672 hasConcept C67283656 @default.
• W2165318672 hasConcept C86803240 @default.
• W2165318672 hasConcept C90856448 @default.
• W2165318672 hasConceptScore W2165318672C126831891 @default.
• W2165318672 hasConceptScore W2165318672C144024400 @default.
• W2165318672 hasConceptScore W2165318672C149923435 @default.
• W2165318672 hasConceptScore W2165318672C165901193 @default.
• W2165318672 hasConceptScore W2165318672C18903297 @default.
• W2165318672 hasConceptScore W2165318672C201997182 @default.
• W2165318672 hasConceptScore W2165318672C2776225656 @default.
• W2165318672 hasConceptScore W2165318672C2777445151 @default.
• W2165318672 hasConceptScore W2165318672C2779965526 @default.
• W2165318672 hasConceptScore W2165318672C2908647359 @default.
• W2165318672 hasConceptScore W2165318672C2986834420 @default.
• W2165318672 hasConceptScore W2165318672C67283656 @default.
• W2165318672 hasConceptScore W2165318672C86803240 @default.
• W2165318672 hasConceptScore W2165318672C90856448 @default.
• W2165318672 hasLocation W21653186721 @default.
• W2165318672 hasLocation W21653186722 @default.
• W2165318672 hasOpenAccess W2165318672 @default.
• W2165318672 hasPrimaryLocation W21653186721 @default.
• W2165318672 hasRelatedWork W1529479739 @default.
• W2165318672 hasRelatedWork W1530704143 @default.
• W2165318672 hasRelatedWork W2025325146 @default.
• W2165318672 hasRelatedWork W2071754629 @default.
• W2165318672 hasRelatedWork W2404147258 @default.
• W2165318672 hasRelatedWork W2409339831 @default.
• W2165318672 hasRelatedWork W2785554792 @default.
• W2165318672 hasRelatedWork W3082646903 @default.
• W2165318672 hasRelatedWork W4283800023 @default.
• W2165318672 hasRelatedWork W938335614 @default.
• W2165318672 isParatext "false" @default.
• W2165318672 isRetracted "false" @default.
• W2165318672 magId "2165318672" @default.
• W2165318672 workType "article" @default.