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T E Besser – One of the best experts on this subject based on the ideXlab platform.

  • coagulase positive staphylococcus intramammary infections in primiparous dairy cows
    Journal of Dairy Science, 1994
    Co-Authors: J R Roberson, Dale D Hancock, T E Besser
    Abstract:

    Objectives were to determine the Prevalence of coagulase-positive staphylococcal IMI in primiparous cows at first parturition, to contrast the differences in coagulase-positive staphylococcal IMI in primiparous cows at parturition in herds with high and low Prevalences of coagulase-positive staphylococcal IMI in the lactating herd, and to determine the percentage of primiparous cows having persistent coagulase-positive staphylococcal MI. Milk samples were collected aseptically from cows at the start and end of the study, at dry-off, and at parturition. Herds (n = 18) were split evenly into two categories: high (>10%) or low (<5%) Prevalence of coagulase-positive staphylococcal IMI. At the start, the mean Prevalence of coagulase-positive staphylococcal IMI in high Prevalence herds was 30%, ranging from 13 to 65%, and in low Prevalence herds was 2%, ranging from 0 to 5%. Overall the Prevalence of coagulase-positive staphylococcal IMI in primiparous cows at parturition was 8.1% (67 of 828), ranging from 0 to 27%. Although primiparous cows from high Prevalence herds had a higher Prevalence of coagulase-positive staphylococcal IMI (9.2%; 40 of 436) at parturition than did primiparous cows from low herds (6.9%; 27 of 392), the difference was not significant. Of primiparous cows with coagulase-positive staphylococcal IMI at parturition, 43% had coagulase-positive staphylococcal IMI at least 2 mo after parturition. Primiparous cows with coagulase-positive staphylococcal IMI at parturition may represent significant reservoirs of infection to uninfected herdmates.

  • Coagulase-positive Staphylococcus intramammary infections in primiparous dairy cows
    Journal of Dairy Science, 1994
    Co-Authors: J R Roberson, Dale D Hancock, T E Besser
    Abstract:

    Objectives were to determine the Prevalence of coagulase-positive staphylococcal IMI in primiparous cows at first parturition, to contrast the differences in coagulase-positive staphylococcal IMI in primiparous cows at parturition in herds with high and low Prevalences of coagulase-positive staphylococcal IMI in the lactating herd, and to determine the percentage of primiparous cows having persistent coagulase-positive staphylococcal MI. Milk samples were collected aseptically from cows at the start and end of the study, at dry-off, and at parturition. Herds (n = 18) were split evenly into two categories: high (>10%) or low (

  • PHYSIOLOGY AND MANAGEMENT Coagulase-Positive Staphylococcus Intramammary Infections in Primiparous Dairy Cows1
    , 1994
    Co-Authors: J R Roberson, Dale D Hancock, T E Besser
    Abstract:

    Objectives were to determine the Prevalence of coagulase-positive staphy­ lococcal IMI in primiparous cows at first parturition, to contrast the differences in coagulase-positive staphylococcal IMI in primiparous cows at parturition in herds with high and low Prevalences of coagulase-positive staphylococcal IMI in the lactating herd, and to determine the percentage of primiparous cows having persistent coagulase-positive staphylo­ coccal IMI. Milk samples were collected aseptically from cows at the start and end of the study, at dry-off, and at partu­ rition. Herds (n = 18) were split evenly into two categories: high (>10%) or low (

F D Alonso – One of the best experts on this subject based on the ideXlab platform.

  • use of a crude extract or purified antigen from first instar cattle grubs hypoderma lineatum for the detection of anti hypoderma antibodies in free ranging cervids from southern spain
    Medical and Veterinary Entomology, 2010
    Co-Authors: Rosario Panadero, C Martinezcarrasco, L Leonvizcaino, C Lopez, P Diezbanos, M P Morrondo, F D Alonso
    Abstract:

    During the 2003–2005 hunting seasons, a total of 120 Cervidae, including 39 red deer (Cervus elaphus hispanicus) and 81 fallow deerdeer (Dama dama), were examined for subcutaneous myiasis. Animals were shot from January to June in southern Spain. Specific antibodies against Hypodermatinae (Diptera: Oestridae) were detected by indirect enzyme-linked immunosorbent assay (iELISA) using a crude larval extract (CLE) and a purified antigen [hypodermin C (HC)] obtained from first instars of Hypoderma lineatum (De Villers) (Diptera: Oestridae). Hypoderma actaeon Brauer was the only species detected in this study, which represents the first confirmation of this species in fallow deerdeer from Spain. The overall Prevalence of animals presenting subcutaneous larvae (14.2%) was considerably lower than the Prevalences determined by iELISA with CLE (43.3%) and HC (40.0%). Red deer showed a higher Prevalence of Hypoderma than fallow deerdeer. The concordance between larval examination during the hunting season and iELISA using both antigens was low, whereas the concordance between the CLE and HC ELISAs was good. Larval antigens obtained from H. lineatum constitute a good tool for the diagnosis of H. actaeon in Cervidae, especially when the hunting season does not coincide with the maximum presence of larvae on the back.

  • Use of a crude extract or purified antigen from first‐instar cattle grubs, Hypoderma lineatum, for the detection of anti‐Hypoderma antibodies in free‐ranging cervids from southern Spain
    Medical and Veterinary Entomology, 2010
    Co-Authors: Rosario Panadero, C Lopez, M P Morrondo, C. Martínez-carrasco, Luis León-vizcaíno, Pablo Díez-baños, F D Alonso
    Abstract:

    During the 2003–2005 hunting seasons, a total of 120 Cervidae, including 39 red deer (Cervus elaphus hispanicus) and 81 fallow deerdeer (Dama dama), were examined for subcutaneous myiasis. Animals were shot from January to June in southern Spain. Specific antibodies against Hypodermatinae (Diptera: Oestridae) were detected by indirect enzyme-linked immunosorbent assay (iELISA) using a crude larval extract (CLE) and a purified antigen [hypodermin C (HC)] obtained from first instars of Hypoderma lineatum (De Villers) (Diptera: Oestridae). Hypoderma actaeon Brauer was the only species detected in this study, which represents the first confirmation of this species in fallow deerdeer from Spain. The overall Prevalence of animals presenting subcutaneous larvae (14.2%) was considerably lower than the Prevalences determined by iELISA with CLE (43.3%) and HC (40.0%). Red deer showed a higher Prevalence of Hypoderma than fallow deerdeer. The concordance between larval examination during the hunting season and iELISA using both antigens was low, whereas the concordance between the CLE and HC ELISAs was good. Larval antigens obtained from H. lineatum constitute a good tool for the diagnosis of H. actaeon in Cervidae, especially when the hunting season does not coincide with the maximum presence of larvae on the back.

J R Roberson – One of the best experts on this subject based on the ideXlab platform.

  • coagulase positive staphylococcus intramammary infections in primiparous dairy cows
    Journal of Dairy Science, 1994
    Co-Authors: J R Roberson, Dale D Hancock, T E Besser
    Abstract:

    Objectives were to determine the Prevalence of coagulase-positive staphylococcal IMI in primiparous cows at first parturition, to contrast the differences in coagulase-positive staphylococcal IMI in primiparous cows at parturition in herds with high and low Prevalences of coagulase-positive staphylococcal IMI in the lactating herd, and to determine the percentage of primiparous cows having persistent coagulase-positive staphylococcal MI. Milk samples were collected aseptically from cows at the start and end of the study, at dry-off, and at parturition. Herds (n = 18) were split evenly into two categories: high (>10%) or low (<5%) Prevalence of coagulase-positive staphylococcal IMI. At the start, the mean Prevalence of coagulase-positive staphylococcal IMI in high Prevalence herds was 30%, ranging from 13 to 65%, and in low Prevalence herds was 2%, ranging from 0 to 5%. Overall the Prevalence of coagulase-positive staphylococcal IMI in primiparous cows at parturition was 8.1% (67 of 828), ranging from 0 to 27%. Although primiparous cows from high Prevalence herds had a higher Prevalence of coagulase-positive staphylococcal IMI (9.2%; 40 of 436) at parturition than did primiparous cows from low herds (6.9%; 27 of 392), the difference was not significant. Of primiparous cows with coagulase-positive staphylococcal IMI at parturition, 43% had coagulase-positive staphylococcal IMI at least 2 mo after parturition. Primiparous cows with coagulase-positive staphylococcal IMI at parturition may represent significant reservoirs of infection to uninfected herdmates.

  • Coagulase-positive Staphylococcus intramammary infections in primiparous dairy cows
    Journal of Dairy Science, 1994
    Co-Authors: J R Roberson, Dale D Hancock, T E Besser
    Abstract:

    Objectives were to determine the Prevalence of coagulase-positive staphylococcal IMI in primiparous cows at first parturition, to contrast the differences in coagulase-positive staphylococcal IMI in primiparous cows at parturition in herds with high and low Prevalences of coagulase-positive staphylococcal IMI in the lactating herd, and to determine the percentage of primiparous cows having persistent coagulase-positive staphylococcal MI. Milk samples were collected aseptically from cows at the start and end of the study, at dry-off, and at parturition. Herds (n = 18) were split evenly into two categories: high (>10%) or low (

  • PHYSIOLOGY AND MANAGEMENT Coagulase-Positive Staphylococcus Intramammary Infections in Primiparous Dairy Cows1
    , 1994
    Co-Authors: J R Roberson, Dale D Hancock, T E Besser
    Abstract:

    Objectives were to determine the Prevalence of coagulase-positive staphy­ lococcal IMI in primiparous cows at first parturition, to contrast the differences in coagulase-positive staphylococcal IMI in primiparous cows at parturition in herds with high and low Prevalences of coagulase-positive staphylococcal IMI in the lactating herd, and to determine the percentage of primiparous cows having persistent coagulase-positive staphylo­ coccal IMI. Milk samples were collected aseptically from cows at the start and end of the study, at dry-off, and at partu­ rition. Herds (n = 18) were split evenly into two categories: high (>10%) or low (