Evaluation of 4 predictive algorithms for intramammary infection status in late-lactation cows

2021 ◽  
Author(s):  
S.M. Rowe ◽  
A.K. Vasquez ◽  
S.M. Godden ◽  
D.V. Nydam ◽  
E. Royster ◽  
...  
Keyword(s):  
Infection Status ◽  
Intramammary Infection ◽  
Predictive Algorithms

Enzyme-Linked Immunosorbent Assay and Microbiologic Culture for Diagnosis of Staphylococcus aureus Intramammary Infection in Cows

1996 ◽  
Vol 59 (1) ◽  
pp. 6-10 ◽  
Author(s):  
PAUL C. BARTLETT ◽  
RONALD J. ERSKINE ◽  
PATRICK GASTON ◽  
PHILIP M. SEARS ◽  
HENDRICUS WILHELMUS HOUDIJK
Keyword(s):  
Staphylococcus Aureus ◽  
Sensitivity And Specificity ◽  
Immunosorbent Assay ◽  
Relative Sensitivity ◽  
Elisa Test ◽  
Enzyme Linked Immunosorbent Assay ◽  
Infection Status ◽  
Intramammary Infection ◽  
Previous Infection ◽  
Current Infection

Recent reports have indicated that the relative sensitivity and specificity of the ELISA test for detection of intramammary infection of cows with Staphylococcus aureus is not as high as originally reported. It has been suggested that antibodies measured by enzyme-linked immunosorbent assay (ELISA) more closely reflect previous infection status rather than current infection status, and that the delay in antibody formation following infection and the persistence of antibodies after elimination of infection may be responsible for some of the discrepancy observed between ELISA and bacterial culture results conducted on the same milk sample. This study (n = 209 cows) was undertaken to determine if an ELISA for S. aureus intramammary infection more closely reflects previous infection status than it does current infection status, and to ascertain whether correction of this time-delay factor substantially improves calculated values of ELISA relative sensitivity and specificity. Receiver-operator curves were constructed to compare different time-related definitions of microbiologic culture results used for comparison with ELISA results. A greater degree of curvature in receiver-operator curves indicated that ELISA results did more closely reflect culture results performed on milk samples taken 1 and 3 weeks previously. Insignificant improvement in sensitivity and specificity occurred when the database was limited to cows (n = 140) with milk production greater than 13.6 kg/day. However, values of sensitivity were all less than or equal to 90%, and values of specificity were all less than 54%.

scholarly journals Prediction of intramammary infection status across the dry period from lifetime cow records

2016 ◽  
Vol 99 (7) ◽  
pp. 5586-5595 ◽  
Author(s):  
A.C. Henderson ◽  
C.D. Hudson ◽  
A.J. Bradley ◽  
V.E. Sherwin ◽  
M.J. Green
Keyword(s):  
Infection Status ◽  
Dry Period ◽  
Intramammary Infection

Studies on intestinal tematodes in Korea XVI. Infection status of loaches with the metacercariae of Echinostoma hortense

1985 ◽  
Vol 23 (1) ◽  
pp. 18 ◽  
Author(s):  
Jong Yil Chai ◽  
Sung Jong Hong ◽  
Woon Mok Sohn ◽  
Soon Hyung Lee ◽  
Byong Seol Seo
Keyword(s):  
Infection Status

HIGH PREVALENCE OF MALNUTRITON AND WORM INFECTION AMONG VAN KIEU AND PAKOH CHILDREN AGED 12-36 MONTHS IN DAKRONG DISTRICT, QUANG TRI PROVINCE

2012 ◽  
pp. 129-134
Author(s):  
Thi Lan Tran ◽  
Thi Huong Le ◽  
Xuan Ninh Nguyen
Keyword(s):  
Cross Sectional Study ◽  
Age Group ◽  
Infection Status ◽  
Sectional Study ◽  
Group Recommendation ◽  
Related Factors ◽  
Normal Children ◽  
Cross Sectional ◽  
High Prevalence ◽  
Very High

Objectives: Assess the nutritional status, worm infection status and some related factors among children aged 12-36 months of Dakrong district, Quang Tri province. Subject and method: A cross sectional study was carried out in 2010, in 680 children aged 12-36 months in 4 communes of Dakrong district, Quang Tri province. Results: The malnutrition rate was 55.0% for underweight, 66.5% for stunting and 16.2% for wasting. The prevalence of malnutrition increases by age group. The prevalence of worm infection was 31.6%, the highest prevalence was belong to Ascaris infection (24.6%), followed by Hookworm and Trichuris (6.5% and 6.2%, respectively). The prevalence of worm infection among children under two is very high (27.0%). The prevalence of worm infection was distributed quite equally between the malnutrition children group and normal children group. Recommendation: Early deworming forchildren from 12 months should be considered as important strategy against the malnutrition of children in Dakrong district, Quang Tri province

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