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Emerg Infect Dis. Risk Factors for Nipah Virus Infection among Pteropid Bats, Peninsular Malaysia

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  • Emerg Infect Dis. Risk Factors for Nipah Virus Infection among Pteropid Bats, Peninsular Malaysia

    [Source: Emerging Infectious Diseases Journal, full page: (LINK). Abstract, edited.]
    Research

    Risk Factors for Nipah Virus Infection among Pteropid Bats, Peninsular Malaysia


    Sohayati A. Rahman, Latiffah Hassan, Jonathan H. Epstein, Zaini C. Mamat, Aziz M. Yatim, Sharifah S. Hassan, Hume E. Field, Tom Hughes, Justin Westrum, M.S. Naim, Arshad S. Suri, A. Aziz Jamaluddin, Peter Daszak, and the Henipavirus Ecology Research Group

    Author affiliations: Author affiliations: Veterinary Research Institute, Ipoh, Malaysia (S.A. Rahman, Z.C. Mamat, A.M. Yatim, M.S. Naim); Universiti Putra Malaysia, Selangor, Malaysia (L. Hassan, A.S. Suri); EcoHealth Alliance, New York, New York, USA (J.H. Epstein, T. Hughes, J. Westrum, P. Daszak); Monash University, Selangor, (S.S. Hassan); Queensland Primary Industries and Fisheries, Brisbane, Queensland, Australia (H.E. Field)



    Abstract

    We conducted cross-sectional and longitudinal studies to determine the distribution of and risk factors for seropositivity to Nipah virus (NiV) among Pteropus vampyrus and P. hypomelanus bats in Peninsular Malaysia. Neutralizing antibodies against NiV were detected at most locations surveyed. We observed a consistently higher NiV risk (odds ratio 3.9) and seroprevalence (32.8%) for P. vampyrus than P. hypomelanus (11.1%) bats. A 3-year longitudinal study of P. hypomelanus bats indicated nonseasonal temporal variation in seroprevalence, evidence for viral circulation within the study period, and an overall NiV seroprevalence of 9.8%. The seroprevalence fluctuated over the study duration between 1% and 20% and generally decreased during 2004?2006. Adult bats, particularly pregnant, with dependent pup and lactating bats, had a higher prevalence of NiV antibodies than juveniles. Antibodies in juveniles 6 months?2 years of age suggested viral circulation within the study period.
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