Relative seroprevalence of cysticercus antigens and antibodies and antibodies to Taenia ova in a population sample in south India suggests immunity against neurocysticercosis

T Jayaraman, V Prabhakaran, P Babu, MV Raghava, V Rajshekhar, P Dorny, J Muliyil, A Oommen

    Research output: Contribution to journalA1: Web of Science-article

    Abstract

    We evaluated the exposure of a community in Vellore district of south India to Taenia solium infection and its relationship to the prevalence of neurocysticercosis (NCC) causing active epilepsy. Seroprevalence of Taenia cysticercus antigens and antibodies were determined in 1064 randomly chosen asymptomatic individuals, antibodies to T. solium ova in 197 selected sera, and prevalence of taeniasis by a coproantigen test in 729 stool samples. The prevalence of NCC causing active epilepsy in Vellore district was determined in a population of 50 617. Coproantigens were detected in 0.8% (6 samples), Taenia cysticercus antigens in 4.5% (48 sera) and cysticercus IgG antibodies in 15.9% (169 sera) of the population. Cysticercus antibodies were directed against relatively low molecular weight cyst glycoprotein antigens in 14.9% (158 sera) of the population. IgG antibodies to Taenia ova were found in 81 (41.1%) of the selected samples. Prevalence of NCC causing active epilepsy was 1.3 per 1000 population. These results show high exposure of the population to the parasite and a relatively high prevalence of active infections (4.5% antigen positives) but a low prevalence of NCC causing active epilepsy (0.13%). These findings may indicate that the population is protected against developing neurocysticercosis. IgG antibodies directed against Taenia ova and low molecular weight cyst antigens may contribute to protection.
    Original languageEnglish
    JournalTransactions of the Royal Society of Tropical Medicine and Hygiene
    Volume105
    Issue number3
    Pages (from-to)153-159
    Number of pages7
    ISSN0035-9203
    DOIs
    Publication statusPublished - 2011

    Keywords

    • B780-tropical-medicine
    • Helminthic diseases
    • Neurocysticercosis
    • Taeniasis
    • Taenia solium
    • Epilepsy
    • Prevalence
    • Antigens
    • Antibodies
    • Immunoglobulin G
    • Ova
    • Immunity
    • Exposure
    • India
    • Asia-South

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