Solomon T, 2004. Flavivirus encephalitis. N Engl J Med 351: 370–378.
Campbell GL, Hills SL, Fischer M, Jacobson JA, Hoke CH, Hombach JM, Marfin AA, Solomon T, Tsai TF, Tsu VD, Ginsburg AS, 2011. Estimated global incidence of Japanese encephalitis: a systematic review. Bull World Health Organ 89: 766–774.
World Health Organization, 2011. Japanese Encephalitis. Available at: www.who.int/nuvi/je/en/. Accessed July 22, 2012.
Halstead SB, Jacobson J, 2003. Japanese encephalitis. Adv Virus Res 61: 103–138.
Schneider RJ, Firestone MH, Edelman R, Chieowanich P, Pronpibul R, 1974. Clinical sequelae after Japanese encephalitis: a one year follow-up study in Thailand. Southeast Asian J Trop Med Public Health 5: 560–568.
Nett RJ, Campbell GL, Reisen WK, 2008. Potential for the emergence of Japanese encephalitis virus in California. Vector Borne Zoonotic Dis 9: 511–517.
Van den Hurk AF, Ritchie SA, Mackenzie JS, 2009. Ecology and geographical expansion of Japanese encephalitis virus. Annu Rev Entomol 54: 17–35.
Mackenzie JS, Gubler DJ, Petersen LR, 2004. Emerging flaviviruses: the spread and resurgence of Japanese encephalitis, West Nile and dengue viruses. Nat Med 10: 98–109.
Endy TP, Nisalak A, 2002. Japanese encephalitis virus: ecology and epidemiology. Curr Top Microbiol Immunol 267: 11–48.
Rosen L, 1986. The natural history of Japanese encephalitis virus. Annu Rev Microbiol 40: 395–414.
Buescher EL, Scherer WF, Rosenberg MZ, Gresser I, Hardy JL, Bullock HR, 1959. Ecologic studies of Japanese encephalitis virus in Japan. II. Mosquito infection. Am J Trop Med Hyg 8: 651–654.
Scherer WF, Buescher EL, Fleming MB, Noguchi A, Scanlon J, 1959. Ecologic studies of Japanese encephalitis virus in Japan. III. Mosquito factors. Zootropism and vertical flight of Culex tritaeniorhynchus with observations on variations in collections from animal-baited traps in different habitats. Am J Trop Med Hyg 8: 665–677.
Scherer WF, Buescher EL, McClure HE, 1959. Ecologic studies of Japanese encephalitis virus in Japan. V. Avian factors. Am J Trop Med Hyg 8: 689–697.
Scherer WF, Moyer JT, Izumi T, Gresser I, McCown J, 1959. Ecologic studies of Japanese encephalitis virus in Japan. VI. Swine infection. Am J Trop Med Hyg 8: 698–706.
Soman RS, Rodrigues FM, Guttikar SN, Guru PY, 1977. Experimental viraemia and transmission of Japanese encephalitis virus by mosquitoes in ardeid birds. Indian J Med Res 65: 709–718.
Gresser I, Hardy JL, Hu SMK, Scherer WF, 1958. Factors influencing transmission of Japanese B encephalitis virus by a colonized strain of Culex tritaeniorhynchus giles, from infected pigs and chicks to susceptible pigs and birds. Am J Trop Med Hyg 7: 365–373.
Sazawa H, 1968. Japanese encephalitis in domestic animals. Bull Office International des el Pizooties 70: 627–633.
Hammon WM, Reeves WC, Sather GE, 1951. Japanese B encephalitis virus in the blood of experimentally inoculated birds; epidemiological implications. Am J Epidemiol 53: 249–261.
Dhanda V, Banergee K, Deshmukh PK, Ilkal MA, 1977. Experimental viraemia and transmission of Japanese encephalitis virus by mosquitoes in domestic ducks. Indian J Med Res 66: 881–888.
Banerjee K, Deshmukh PK, 1987. Transmission of Japanese encephalitis virus to chicks by individual Culex tritaeniorhyncus mosquitoes. Indian J Med Res 86: 726–727.
Turell MJ, Mores CN, Dohm DJ, Komilov N, Paragas J, Lee JS, Shermuhemedova D, Endy TP, Kodirov A, Khodjaev S, 2006. Laboratory transmission of Japanese encephalitis and West Nile viruses by molestus form of Culex pipiens (Diptera: Culicidae) collected in Uzbekistan in 2004. J Med Entomol 43: 296–300.
Ni H, Barrett ADT, 1995. Nucleotide and deduced amino acid sequence of the structural protein genes of Japanese encephalitis viruses from different geographical locations. J Gen Virol 76: 401–407.
Westaway EG, 1966. Assessment and application of a cell line from pig kidney for plaque assay and neutralization tests with twelve group B arboviruses. Am J Epidemiol 84: 439–456.
Handelsman DJ, 2002. Optimal power transformations for analysis of sperm concentration and other semen variables. J Androl 23: 629–634.
Weaver SC, Reisen WK, 2010. Present and future arboviral threats. Antiviral Res 85: 328–345.
Platonov AE, Rossi G, Karan LS, Mironov KO, Busani L, Rezza G, 2012. Does the Japanese encephalitis virus (JEV) represent a threat for human health in Europe? Detection of JEV RNA sequences in birds collected in Italy. Euro Surveill 17: 20241.
Ilkal MA, Prasanna Y, Jacob G, Geevarghese G, Banerjee K, 1994. Experimental studies on the susceptibility of domestic pigs to West Nile virus followed by Japanese encephalitis virus infection and vice versa. Acta Virol 38: 157–161.
Ogata M, Nagao Y, Jitsunari F, Kitamura N, Okazaki T, 1970. Infection of herons and domestic fowls with Japanese encephalitis virus with specific reference to maternal antibody of hen (epidemiological study on Japanese encephalitis 26). Acta Med Okayama 24: 175–184.
Swayne DE, Pantin-Jackwood M, 2006. Pathogenicity of avian influenza viruses in poultry. Dev Biol (Basel) 124: 61–67.
Past two years | Past Year | Past 30 Days | |
---|---|---|---|
Abstract Views | 1 | 1 | 1 |
Full Text Views | 445 | 171 | 2 |
PDF Downloads | 150 | 60 | 2 |
Ardeid birds and pigs are known as major amplifying hosts for Japanese encephalitis virus, and ducklings and chickens have been considered to play at best a minor role in outbreaks because of their low or absent viremia. We hypothesized that viremia of sufficient magnitude would develop in young ducklings (Anas platyrhynchos) and chicks (Gallus gallus) for them to serve as reservoir hosts and thereby contribute to the transmission cycle. Infection was associated with reduced weight gain in both species, and ducklings infected at 10 days of age or less showed overt clinical signs of disease. The mean peak viremia in birds of both species decreased as the age at infection increased from 2 to 42 days, indicating the importance of age of infection on magnitude of viremia in birds from both species, and suggesting that young poultry may be amplifying hosts of importance in disease-endemic regions.
Financial support: This study was supported by a VSB Fonds fellowship to Natalie B. Cleton and by subcontract N01-AI25489 from the National Institute of Allergy and Infectious Diseases.
Authors' addresses: Natalie B. Cleton, National Institute for Public Health and the Environment, Centre for Infectious Disease Control, Bilthoven, The Netherlands, E-mail: natalie.cleton@rivm.nl. Angela Bosco-Lauth and Richard A. Bowen, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, E-mails: mopargal@colostate.edu and rbowen@colostate.edu. Michael J. Page, Office of the Provost, Bentley University, Waltham, MA, E-mail: mpage@bentley.edu.