Document Detail

Filariasis due to Loa loa and Mansonella perstans: distribution in the region of Okondja, Haut-Ogooué Province, Gabon, with parasitological and serological follow-up over one year.
MedLine Citation:
PMID:  3479854     Owner:  NLM     Status:  MEDLINE    
The prevalence of Loa loa and Mansonella perstans filariasis has been determined in 6 rural villages in eastern Gabon. Between 18.9 and 27.2% of people carry L. loa microfilariae with an overall microfilarial rate of 25.1%. The microfilarial rate for M. perstans was more variable, between 33.3 and 62.2% (average 49.1%). No significant difference was seen in the microfilarial rate with age over 15 years for either parasite, but men were infected more frequently than women. Anti-L. loa antibody titres were measured, using a homologous microfilarial antigen in ELISA. Taking the parasitological and immunological evaluations together, only 10% of the sample population appear to be free of these filarial infections. L. loa and M. perstans microfilaraemia and corresponding serology were also investigated twice in 150 people at a one-year interval. 99.1% of the cases who had no circulating L. loa microfilaria in March 1984 still did not show any 12 months later. Similarly, 97.1% of the untreated, microfilaraemic cases still harboured this parasite a year later. The same was not observed for M. perstans, since microfilariae appeared or disappeared in 26.7% of the cases. This suggests different dynamics for the two filarial infections. Variation in individual anti-L. loa antibody titres was low. The possibility of a genetic influence on the expression of loiasis is discussed.
M Van Hoegaerden; B Chabaud; J P Akue; B Ivanoff
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Transactions of the Royal Society of Tropical Medicine and Hygiene     Volume:  81     ISSN:  0035-9203     ISO Abbreviation:  Trans. R. Soc. Trop. Med. Hyg.     Publication Date:  1987  
Date Detail:
Created Date:  1987-12-21     Completed Date:  1987-12-21     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7506129     Medline TA:  Trans R Soc Trop Med Hyg     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  441-6     Citation Subset:  IM    
International Medical Research Centre, Franceville, Gabon.
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MeSH Terms
Filariasis / epidemiology*
Follow-Up Studies
Loiasis / blood,  epidemiology,  parasitology
Mansonelliasis / blood,  epidemiology,  parasitology
Middle Aged

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