Emmanuel Okello

Title(s)Assistant Specialist, Anr VMPopulation Hlth&Reprod
SchoolAssociate Vice President
Address18830 Rd 112
CA 93274
Phone559-688-1731
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. A Systematic Review of the Recent Techniques Commonly Used in the Diagnosis of Mycoplasma bovis in Dairy Cattle. Pathogens. 2023 Sep 19; 12(9). Okella H, Tonooka K, Okello E. PMID: 37764986; PMCID: PMC10535753.
      View in: PubMed   Mentions: 1  
    2. Effect of dry cow therapy on antimicrobial resistance of mastitis pathogens post-calving. Front Vet Sci. 2023; 10:1132810. Okello E, ElAshmawy WR, Williams DR, Lehenbauer TW, Aly SS. PMID: 37546337; PMCID: PMC10399697.
      View in: PubMed   Mentions: 1  
    3. Prevalence of antimicrobial resistance in fecal Escherichia coli and Enterococcus spp. isolates from beef cow-calf operations in northern California and associations with farm practices. Front Microbiol. 2023; 14:1086203. Morris C, Wickramasingha D, Abdelfattah EM, Pereira RV, Okello E, Maier G. PMID: 36910206; PMCID: PMC9996069.
      View in: PubMed   Mentions: 3  
    4. ADMET profiling and molecular docking of potential antimicrobial peptides previously isolated from African catfish, Clarias gariepinus. Front Mol Biosci. 2022; 9:1039286. Okella H, Okello E, Mtewa AG, Ikiriza H, Kaggwa B, Aber J, Ndekezi C, Nkamwesiga J, Ajayi CO, Mugeni IM, Ssentamu G, Ochwo S, Odongo S, Tolo CU, Kato CD, Engeu PO. PMID: 36567944; PMCID: PMC9772024.
      View in: PubMed   Mentions: 1  
    5. Effectiveness of Intramammary Antibiotics, Internal Teat Sealants, or Both at Dry-Off in Dairy Cows: Milk Production and Somatic Cell Count Outcomes. Vet Sci. 2022 Oct 11; 9(10). ElAshmawy WR, Okello E, Williams DR, Anderson RJ, Karle B, Lehenbauer TW, Aly SS. PMID: 36288172; PMCID: PMC9608262.
      View in: PubMed   Mentions: 3  
    6. Effect of Intramammary Dry Cow Antimicrobial Treatment on Fresh Cow's Milk Microbiota in California Commercial Dairies. Antibiotics (Basel). 2022 Jul 18; 11(7). Basbas C, Aly S, Okello E, Karle BM, Lehenbauer T, Williams D, Ganda E, Wiedmann M, Pereira RV. PMID: 35884217; PMCID: PMC9312063.
      View in: PubMed   Mentions: 1  
    7. Effectiveness of Intramammary Antibiotics, Internal Teat Sealants, or Both at Dry-Off in Dairy Cows: Clinical Mastitis and Culling Outcomes. Antibiotics (Basel). 2022 Jul 15; 11(7). Aly SS, Okello E, ElAshmawy WR, Williams DR, Anderson RJ, Rossitto P, Tonooka K, Glenn K, Karle B, Lehenbauer TW. PMID: 35884208; PMCID: PMC9311672.
      View in: PubMed   Mentions: 4  
    8. Potential impacts to antibiotics use around the dry period if selective dry cow therapy is adopted by dairy herds: An example of the western US. Prev Vet Med. 2022 Sep; 206:105709. Ferreira FC, Martínez-López B, Okello E. PMID: 35835049.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    9. Bayesian estimation of sensitivity and specificity of a rapid mastitis test kit, bacterial culture, and PCR for detection of Staphylococcus aureus, Streptococcus species, and coliforms in bovine milk samples. J Dairy Sci. 2022 Jul; 105(7):6240-6250. Chamchoy T, Okello E, Williams DR, Tonooka K, Glenn K, Maehana K, Gardner IA, Aly SS. PMID: 35525615.
      View in: PubMed   Mentions: 2     Fields:    Translation:AnimalsCells
    10. Factors Associated with Antimicrobial Stewardship Practices on California Dairies: One Year Post Senate Bill 27. Antibiotics (Basel). 2022 Jan 27; 11(2). Abdelfattah EM, Ekong PS, Okello E, Williams DR, Karle BM, Lehenbauer TW, Aly SS. PMID: 35203769; PMCID: PMC8868138.
      View in: PubMed   Mentions:
    11. Estimating the Rates of Acquisition and loss of Resistance of Enterobacteriaceae to Antimicrobial Drugs in Pre-Weaned Dairy Calves. Microorganisms. 2021 Oct 06; 9(10). Cella E, Okello E, Rossitto PV, Cenci-Goga BT, Grispoldi L, Williams DR, Sheedy DB, Pereira R, Karle BM, Lehenbauer TW, Aly SS. PMID: 34683424; PMCID: PMC8539406.
      View in: PubMed   Mentions: 2  
    12. 2019 Survey of Antimicrobial Drug Use and Stewardship Practices in Adult Cows on California Dairies: Post Senate Bill 27. Microorganisms. 2021 Jul 14; 9(7). Abdelfattah EM, Ekong PS, Okello E, Williams DR, Karle BM, Rowe JD, Marshall ES, Lehenbauer TW, Aly SS. PMID: 34361940; PMCID: PMC8304910.
      View in: PubMed   Mentions: 6  
    13. 2018 Survey of factors associated with antimicrobial drug use and stewardship practices in adult cows on conventional California dairies: immediate post-Senate Bill 27 impact. PeerJ. 2021; 9:e11596. Ekong PS, Abdelfattah EM, Okello E, Williams DR, Lehenbauer TW, Karle BM, Rowe JD, Aly SS. PMID: 34306825; PMCID: PMC8284309.
      View in: PubMed   Mentions: 4     Fields:    
    14. 2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27. PeerJ. 2021; 9:e11515. Ekong PS, Abdelfattah EM, Okello E, Williams DR, Lehenbauer TW, Karle BM, Rowe JD, Marshall ES, Aly SS. PMID: 34306824; PMCID: PMC8284310.
      View in: PubMed   Mentions: 5     Fields:    
    15. Survey on Antimicrobial Drug Use Practices in California Preweaned Dairy Calves. Front Vet Sci. 2021; 8:636670. Okello E, Williams DR, ElAshmawy WR, Adams J, Pereira RV, Lehenbauer TW, Aly SS. PMID: 33969034; PMCID: PMC8101284.
      View in: PubMed   Mentions: 9  
    16. Epidemiology of antimicrobial resistance (AMR) on California dairies: descriptive and cluster analyses of AMR phenotype of fecal commensal bacteria isolated from adult cows. PeerJ. 2021; 9:e11108. Abdelfattah EM, Ekong PS, Okello E, Chamchoy T, Karle BM, Black RA, Sheedy D, ElAshmawy WR, Williams DR, Califano D, Tovar LFD, Ongom J, Lehenbauer TW, Byrne BA, Aly SS. PMID: 33976962; PMCID: PMC8063881.
      View in: PubMed   Mentions: 8     Fields:    
    17. Effect of Antimicrobial Treatment on the Dynamics of Ceftiofur Resistance in Enterobacteriaceae from Adult California Dairy Cows. Microorganisms. 2021 Apr 14; 9(4). Sheedy DB, Okello E, Williams DR, Precht K, Cella E, Lehenbauer TW, Aly SS. PMID: 33919743; PMCID: PMC8070714.
      View in: PubMed   Mentions: 3  
    18. Prevalence of Fascioliasis and Associated Economic Losses in Cattle Slaughtered at Lira Municipality Abattoir in Northern Uganda. Animals (Basel). 2021 Mar 04; 11(3). Opio LG, Abdelfattah EM, Terry J, Odongo S, Okello E. PMID: 33806313; PMCID: PMC7999142.
      View in: PubMed   Mentions: 8  
    19. Molecular epidemiology of coagulase-negative Staphylococcus species isolated at different lactation stages from dairy cattle in the United States. PeerJ. 2019; 7:e6749. Jenkins SN, Okello E, Rossitto PV, Lehenbauer TW, Champagne J, Penedo MCT, Arruda AG, Godden S, Rapnicki P, Gorden PJ, Timms LL, Aly SS. PMID: 31119068; PMCID: PMC6507897.
      View in: PubMed   Mentions: 19     Fields:    
    20. Association between herd management practices and antimicrobial resistance in Salmonella spp. from cull dairy cattle in Central California. PeerJ. 2019; 7:e6546. Pereira R, Williams DR, Rossitto P, Adaska J, Okello E, Champagne J, Lehenbauer TW, Li X, Chase J, Nguyen T, Pires AFA, Atwill ER, Aly SS. PMID: 30923650; PMCID: PMC6431540.
      View in: PubMed   Mentions: 6     Fields:    
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