RESUMEN
Bluetongue virus [BTV] is recognized to infect ruminants all around the world, and its prevalence mainly depends on the BTV situation, vectors distribution, weather patterns and susceptibility of the host. The purpose of this study was to draw a correlation between the prevalence of BTV antibodies and climate changes in Iranian Azerbaijan Province. Sera samples were collected from sheep, in a period of a year between 2008- 2009. The seroprevalance of Bluetongue antibodies were evaluated using an Enzyme-linked Immunosorbent Assay, considering monthly weather changes in the Province, recorded by the Iran Meteorological Organization. The infection rate was found to be 55.9% and there was a peak BTV prevalence of at 81% [p<0.001]. The Pearson correlation coefficient ranges were found to be between 0.36 and 0.005. The vector distribution is based on climatic changes and environmental conditions. It was concluded that the phenotypic expression of the BTV gene may be influenced by the weather
Asunto(s)
Animales , Virus de la Lengua Azul , Prevalencia , Estaciones del Año , Ensayo de Inmunoadsorción Enzimática , Anticuerpos , Clima , Estudios Seroepidemiológicos , OvinosRESUMEN
Caprine pox virus disease play an important role in major constraints to small ruminants production in Iran. This study was conducted in different districts of Iran to determine the prevalence of goats pox virus disease in different age groups, sex and seasons in Black goats of Iran. In this study skin lesions of male and female goats were collected randomly from different provinces during [January, 2007 to November, 2010]. A total of 318 samples were examined, of which 66 were found positive. The overall prevalence rate was 20.75%. Pox virus disease was observed significantly higher in older [58.33%] female goats [36.79%] and in rainy seasons [26.16%]. The estimated economic losses due to condemnation of skin deficiency were 5.59% which cost US[dollar sign]115.44 per thousand skin of slaughtered goats. The prevalence was significantly different [p
RESUMEN
Infectious Bovine Rhinotrachitis [IBR] caused by Bovine Herpes Virus-1 [BoHV-1] was first, observed in one of the Tehran Industrial cattle breeders, with importation of cattle in 1965. Later, the isolation of bovine herpes virus approved the existence of the disease in the most of the provinces of the Iran. Presence of antibodies against BoHV-1 was evaluated in young bovines of north, south and central provinces of Iran. Bovines with age 1 to 4 years old, non-vaccinated and without clinical symptoms were included in the study. 558 serum samples were collected equivalent to 10% of the population in each farm. The sera were tested by ELISA and micro serum neutralization [MSN] in monolayers of MDBK cells using BoHV- 1 reference strain. The results of ELISA showed that 56% [314/558] were positive and 44% [244/558] were negative for BoHV-1 specific antibody. Whoever MSN assay showed that 48% [269/558] were negative and 52% [289/558] were positive. These positive sera demonstrated that 54% had serum neutralization titer between 4-16, 35% on 32 to 64 and 11% on 64. Results suggest that the virus is actively circulating and transmitting in young herds and is a constant source of infection in the herd
RESUMEN
This report describes the preparation of a safe and immunogenic single vaccine against capripox disease in sheep and goats using two different types of cells [primary lamb kidney and vero, a bovine turbinate cell line]. This used the 0240 pox strain isolated from sheep during an outbreak. The prepared vaccine was administered subcutaneously and induced complete protection against an experimental sheep and goat pox challenge virus. For the final evaluation, the efficacy of the prepared vaccine was used in a field trial under the supervision of veterinary clinicians. This vaccine was proved to be more efficacious than the routine vaccines that are currently produced