isolation of a virus serologically related to the bluetongue group from an outbreak of haemorrhagic disease among exotic deer in saudi february 1991 a severe haemorrhagic disease affected exotic deer aged over six months in the al-hofuf area of the eastern region of saudi arabia. the morbidity rate was 40 per cent and the case fatality rate was 60 per cent. the clinical signs were high temperature (up to 41.5 degrees c), nasal discharge, slight salivation and lacrimation, congestion of the conjunctivae, torticollis, tremors when trying to stand, recumbency and coma leading to death. post mortem examination revealed a severe ...19921333668
association of klebsiella organisms with pulmonary lesions in sheep.small nodules were seen on chest wall and in the lungs of sheep slaughtered in al-ahsa abattoir, saudi arabia. klebsiella pneumoniae subspecies ozaenae was isolated and characterized. the histopathology of the nodules was described.19911818362
detection of insect immunity substances (lectins) in the midgut extracts from larvae and adult red palm weevil rhynchophorus ferrugineus (olivier) in al-ahsa, saudi arabia.the hemagglutination activities of midgut (mg) fractions of red palm weevil, rhynchophorus ferrugineus against mammalian erythrocytes (rbc) from man (abo), rabbit, horse and sheep were studied. the highest titers were seen with rabbit rbc (p < 0.05) followed by human group b, human group o, horse, human group a, human group ab and sheep, respectively. insect age and nutritional status significantly influenced the agglutinating activities. some of the unfed insects were having low activities (p > ...201020464944
abortions, stillbirths and deformities in sheep at the al-ahsa oasis in eastern saudi arabia: isolation of a bluetongue serogroup virus from the affected lambs.a wave of abortions, stillbirths and deformities in sheep occurred at the al-ahsa oasis in the eastern region of saudi arabia in the second half of 1999. the abortions were recorded in august and september and stillbirths and deformities in neonates were observed in october. adult sheep were clinically normal. a virus was isolated in chicken embryos, adapted to vero cell culture and further identified as bluetongue (bt) virus. the virus isolated was not neutralised by the akabane virus. referenc ...200415861886
sheep-associated malignant catarrhal fever involving 3-5-week-old calves in saudi arabia.between late december 1999 and late april 2000, three locally bred friesian calves (ageing 25, 28 and 35 days) in a dairy farm, at al-ahsa locality of the eastern region of saudi arabia showed dullness and inappetence. their rectal temperatures ranged between 41 and 41.5 degrees c. one to 2 days later and onwards, the calves showed lacrimation, nasal discharge, salivation, oedema of the head, conjunctivitis, exo-ophthalmia and corneal opacity. one calf showed diarrhoea. the superficial lymph nod ...200312675894
study of akabane infection in saudi arabia by the use of sentinel ruminants.two sentinel herds of calves (eastern and central regions of saudi arabia) and one of sheep and goats (south western region) were established to study akabane virus infection. the herd at the al-ahsa oasis (eastern region) showed evidence of akabane viral activity, as reflected by the presence of maternal (colostral) antibody, which had waned to insignificant concentrations by the time the calves had reached the age of 5 months. there was no evidence of subsequent seroconversion. the other two s ...19989839208
hyalomma (hyalommina) arabica: nymphal and larval identity and spiny mouse hosts in saudi arabia (acarina: ixodoidea: ixodidae).nymphal and larval hyalomma (hyalommina) arabica pegram, hoogstraal, and wassef, 1982, described herein, closely resemble those of hyalomma (hyalommina) rhipicephaloides neumann, differing chiefly in body size (both stages), nymphal basis capituli and scutal proportional dimensions, and distinctness of larval coxal spurs. females of these species are also structurally similar but males differ in major critical characters. nymphs and larvae of both species parasitize the spiny mouse (acomys spp.) ...19854057007
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