Isolation of akabane virus from the biting midge Culicoides oxystoma in Japan

Kurogi, H.; Akiba, Kazuo; Inaba, Yuji; Matumoto, Minoru

doi:10.1016/0378-1135(87)90078-2

Cited by 84 publications

(47 citation statements)

References 12 publications

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“…In the Sudan C. schultzei group midges have been implicated in the transmission of the BT-related epizootic haemorrhagic disease viruses (EHDV) [23], at least two serotypes of which occur in Oman (Al-Busaidy and Mellor, unpublished observations). Also, Akabane virus has recently been isolated from C. schultzei group midges in Japan [13]. C. schultzei midges have not been implicated as vectors of BTV and it is unlikely that they are significantly involved in the transmission of this group of viruses [23].…”

Section: Resultsmentioning

confidence: 99%

“…Tenfold dilutions of blood were made in phosphate buffered saline (PBS) supplemented with 02 % bovine serum albumin (BSA) plus antibiotic stock. Virus isolation was attempted from each dilution by intravenous (J/V) inoculation into 11-day-old embryonated chick eggs, using 5 eggs per dilution [11] intracerebral (I/C) inoculation of suckling mice (2-3 day old) using a 5 mice per dilution [12][13][14].…”

Section: Insect Collectionmentioning

confidence: 99%

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Isolation and identification of arboviruses from the Sultanate of Oman

Al-Busaidy

Mellor

1991

Epidemiol. Infect.

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SUMMARYSentinel herds and a vector surveillance system were used to identify the presence of arboviruses in Oman. Two strains of bluetongue virus (BTV) serotype 4 and two strains of Akabane virus, were isolated and identified. Both BTV isolates and one Akabane virus isolate came from goats while the second Akabane isolate came from Culicoides imicola. This is the first isolation of an Akabane virus from Culicoides in Arabia. Vector competence studies with the Oman viruses in laboratory reared C. variipennis showed that after oral infection both viruses replicated in Culicoides and were maintained at high titre for at least 10 days post infection.

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Section: Resultsmentioning

confidence: 99%

Section: Insect Collectionmentioning

confidence: 99%

Isolation and identification of arboviruses from the Sultanate of Oman

Al-Busaidy

Mellor

1991

Epidemiol. Infect.

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“…This virus is transmitted by a hematophagous arthropod vector. In Japan, Culicoides biting midges are primarily responsible for transmitting AKAV [11,24]. Akabane disease mostly occurs in the western and southern parts of Japan because the climates of those area are suitable for vector activity.…”

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confidence: 99%

Duration of Maternally Derived Antibodies against Akabane Virus in Calves: Survival Analysis

et al. 2009

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ABSTRACT. To prevent encephalomyelitis caused by Akabane virus, as observed in 2006, vaccination of calves is one of the most effective prophylactic measures. For vaccination of calves, the duration of the maternal antibodies need to be considered because these antibodies are an obstacle to the effectiveness of the vaccine. In order to estimate the age of antibody decay in calves and to find factors influencing the duration of passive immunity, we conducted survival analysis using data from nationwide sentinel surveillance for Akabane disease. The accelerated failure time model based on the presence of interval censored data was used. The best fit model with a log-logistic distribution indicated that the maternal antibodies of beef calves last 1.11 times longer (95% confidence interval [CI]=1.06-1.16) than those of dairy calves. Calves in the western part of Japan and on Kyushu island, Japan, maintained the maternal antibodies 1.17 times (95% CI=1.11-1.23 and 1.10-1.24, respectively) longer than those in the eastern part of Japan. The ages at which beef calves in the eastern part of Japan, western part of Japan and Kyushu loose the antibodies, with 90% probability, were estimated to be 4.1, 4.8 and 4.8 months, respectively, while the ages were 3.7, 4.3 and 4.3 months for dairy calves in the same regions. The duration of maternal immunity to Akabane virus was different for different types of cattle and among different regions. These differences need to be taken into account when a vaccination strategy is adopted for preventing epizootic encephalomyelitis in the future.KEY WORDS: AFT model, akabane virus, maternal antibody, survival analysis.

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“…In Africa, Akabane virus was isolated from mosquitoes and Culicoides (INABA et al 1990). Furthermore, the virus was isolated from Culicoides oxysroma in Japan (KUROGI et al 1987) and from C. brevirarsis in Australia (ST. GEORGE et al. 1978).…”

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confidence: 99%

The isolation of Akabane virus (Iriki strain) from calves in Taiwan

Liao¹,

Lu²,

Goto

et al. 1996

J. Basic Microbiol.

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Nonsuppurative encephalitis in calves aged 4-12 months, cow abortion and fetal deformities were endemic in dairy farms in Taiwan in recent years. A virological investigation emphasizing on Arthpodborn virus (Arbovirus) was conducted. Total of 11 strains of Akabane virus were isolated from endemic districts between June and July of 1992. Among them, seven viruses were isolated from blood samples of 15 calves showing nervous signs. Another 4 Akabane viruses were isolated from clinically healthy calves from three of six dairy farms investigated. All the six investigated farms had a recent history of abortion and fetal deformities. The isolates caused prominent cytopathic effects in HmLu-1 cells and could reach a high virus titers (5 x 10(6) TCID50/ml). As demonstrated by a cross neutralization test, the isolates had identical antigenicity to Iriki strain of Akabane virus, but were antigenically more distant to JaGar-39 and OBE-1 strain of Akabane virus. This is the first report on the isolation of Akabane virus in Taiwan, and also the second report on the isolation of Iriki virus in the world.

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Isolation of akabane virus from the biting midge Culicoides oxystoma in Japan

Cited by 84 publications

References 12 publications

Isolation and identification of arboviruses from the Sultanate of Oman

Isolation and identification of arboviruses from the Sultanate of Oman

Duration of Maternally Derived Antibodies against Akabane Virus in Calves: Survival Analysis

The isolation of Akabane virus (Iriki strain) from calves in Taiwan

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