prevalence of besnoitiosis in domestic ruminants in kenya: a preliminary survey.a preliminary survey on the prevalence of besnoitiosis in domestic ruminants in kenya based on field and farm visits, clinical and post mortem examinations and histopathological examination of tissues and biopsies, showed that goats are the most affected, followed by cattle, while sheep were unaffected. caprine besnoitiosis occurred in a continuous belt in 5 of the 8 provinces in kenya stretching from the coast, eastern, north eastern, nairobi and the rift valley provinces. mandera, in the north ...199910855837
arbovirus isolations from ixodid ticks infesting livestock, kano plain, a study conducted on the kano plain, kenya, virus isolation attempts were made on ixodid ticks collected, over a 14-month period, from livestock held in family enclosures (bomas) before releasing the animals for daily foraging. 8735 amblyomma variegatum (fabricius) were tested, 98.6% of which were taken from cattle, yielding 36 strains of dugbe (dug), four strains of nairobi sheep disease (nsd), three strains of bhanja (bha), one strain of thogoto (tho) and five strains of virus which could n ...19807210125
phenology of stomoxyinae in a kenyan forest.the biology of nineteen taxa of african stomoxyinae was studied during experiments with odour-baited vavoua traps in nairobi national park, kenya. both male and female stomoxys were captured in similar numbers with co2 released at 2 l/min or octenol released at 2 mg/h. some species of haematobosca reacted synergistically to a combination of these attractants, producing large increases in catch. stygeromyia and rhinomusca responded only to co2 and prostomoxys did not respond to either bait. many ...19968994131
hydatid disease in the turkana district of kenya, iv. the prevalence of echinococcus granulosus infections in dogs, and observations on the role of the dog in the lifestyle of the turkana.the prevalence of echinococcus granulosus in dogs in the turkana district of kenya was 39.4% of 695 examined. of these, 98 (35.8%) had heavy echinococcus worm burdens (10(3)-5 x 10(4) ), while 54 (19.7%) and 122 (44.5%) had medium (201-1000) and light (1-200) burdens. the possible sources of these infections are discussed. the prevalence rate differed in various parts of the district, ranging from 63.5% in the northwest, where the highest incidence of human hydatidosis also occurs, to nil along ...19853985706
kemri hep-cell ii hepatitis b surface antigen screening kit.kenya is a high hepatitis b virus (hbv) endemic zone. prevention of hbv transmission by transfusing safe blood is necessary. kits for screening hepatitis b surface antigen (hbsag) are usually imported and are expensive. hence it has been difficult to screen donated and patient blood samples all over kenya.199910685326
kupe virus, a new virus in the family bunyaviridae, genus nairovirus, kenya.we have previously described isolation and preliminary identification of a virus related to dugbe virus (dugv), family bunyaviridae, genus nairovirus. six isolates of the virus were obtained from pools of amblyomma gemma and rhipicephalus pulchellus ticks collected from hides of cattle in nairobi, kenya, in october 1999. we report results of further characterization of this virus, including growth kinetics in cell culture and full-length genome sequencing and genetic characterization, which show ...200919193256
bluetongue studies with sentinel cattle in kenya.bluetongue antibody of 19 different serological types was found in a group of sentinel cattle near nairobi. a continuous challenge by these 19 strains occurred each year in this location. the sero-conversion rates were shown to vary from year to year and rainfall had no obvious effect upon the conversion rates. the 19 different strains of virus were also shown to be active at five widely scattered sites in different parts of the country.1978204705
clonal distribution of the three alleles of the gal(alpha1-4)gal-specific adhesin gene papg among escherichia coli strains from patients with bacteremia.the three alleles of papg, the gal(alpha1-4)gal-specific adhesin gene of escherichia coli p fimbriae, were detected in 101 (54%) of 187 e. coli bacteremia isolates from boston, long beach, california, and nairobi, kenya, by a polymerase chain reaction-based assay, and their distribution was compared with clonal structure and other bacterial and host characteristics. allele ii predominated overall (57% of papg+ strains, vs. 32% for iii and 2% for i). allele distribution differed significantly bet ...19989498444
serological evidence of arboviral infections among humans of coastal kenya.a serosurvey was conducted during september 1987 for evidence of human arboviral infections in the coast province of kenya. sera were collected from 1624 outpatients at three hospitals and tested for antibody to eight arboviruses by the indirect immunofluorescent antibody technique. antibody prevalence rates were: rift valley fever, 2.8%; sindbis, 2.6%; dugbe, 2.1%; dengue-2, 1.0%; west nile, 0.9%; chikungunya, 0.7% and nairobi sheep disease, 0.3%. evidence of crimean-congo haemorrhagic fever vi ...19912051522
a nairobi sheep disease vaccine. 19744522769
nairobi sheep disease in kenya. the isolation of virus from sheep and goats, ticks and possible maintenance hosts.nairobi sheep disease was seen principally upon movement of susceptible animals into the enzootic areas. this occurred most frequently for marketing purposes near the main centres of population. other outbreaks followed local breakdowns in tick control measures. the disease did not occur in epizootic form during the period under consideration. nairobi sheep disease was isolated from pools of rhipicephalus appendiculatus but not from many pools of other tick species. no virus was isolated from th ...1978701790
a survey of nairobi sheep disease antibody in sheep and goats, wild ruminants and rodents within kenya.the distribution of antibody to nairobi sheep disease in sheep and goats in kenya was found to coincide closely with that of the tick, rhipicephalus appendiculatus. the proportions of a population in an enzootic area with antibody was similar in the different age groups. no antibody to the virus was found in rodent sera and while some low titres were found in some wild ruminant sera, these were considered to be most likely cross reactions with antibody to related viruses.1978701789
strategic control of gastrointestinal nematodes of sheep in the highlands of central kenya.the effectiveness of anthelmintic treatments given 3 weeks after the onset of rains to control gastrointestinal nematodes in sheep in the highlands of central kenya was investigated. the study was carried out on a farm situated approximately 85 km north west of nairobi in nyandarua district of central kenya. in may 1999, 35 corriedale ram lambs aged between 8 and 10 months were eartagged, weighed and given albendazole at 3.8 mg/kg body mass. the animals were then allocated to three treatment gro ...200212356170
comparative tick counts on game, cattle and sheep on a working game ranch in kenya.the main objective of the study was to determine the possible influence of host species on the maintenance of ticks in the field by determining the relative contribution of game animals compared to domestic animals. the study was carried out on a game ranch 32 km south-east of nairobi. tick counts were carried out on 30 zebu cattle (bos indicus) aged 1 to 3 years and 20 red maasai sheep (ovis aries) aged 6 months to 1 year grazing with game animals in a common area for a period of 2 years and th ...200617405627
isolation of campylobacter spp. and yersinia enterocolitica from domestic animals and human patients in kenya.rectal swabs or faecal samples from 992 domestic animals and 97 human patients in the nairobi region were cultured for thermophilic campylobacter species and yersinia enterocolitica. the highest isolation rate of campylobacters was obtained from diarrhoeic pigs (55.1%), followed by healthy chicken (51.5%), diarrhoeic dogs (47.2%), healthy pigs (44.0%), healthy ducks (29.4%), healthy goats (6.3%), healthy cattle (5.8%), diarrhoeic humans (3.1%), and healthy sheep (2.0%). only one strain of y. ent ...19883345259
observations on rinderpest in kenya, 1986-1989.rinderpest was confirmed in kenya in 1986, 1987, 1988 and 1989. three epidemiologically distinct events appear to have occurred: repeated outbreaks in west pokot district related to cross-border movement of stock, an outbreak in marsabit district in 1987 (thought to have been caused by illegal movement of cattle, possibly in vehicles, from countries further north) and a series of related outbreaks in and near nairobi between 1988 and 1989 due to the unauthorized movement from abattoirs and holdi ...19921472724
the serological relationships of nairobi sheep disease virus. 1978101557
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