{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T00:37:27Z","timestamp":1793147847012,"version":"4.5.0"},"reference-count":60,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,12,2]],"date-time":"2021-12-02T00:00:00Z","timestamp":1638403200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001407","name":"Department of Biotechnology, Ministry of Science and Technology, India","doi-asserted-by":"publisher","award":["SAN NO. 102\/IFD\/SAN\/3141\/2012-2013, dated September, 27 2012"],"award-info":[{"award-number":["SAN NO. 102\/IFD\/SAN\/3141\/2012-2013, dated September, 27 2012"]}],"id":[{"id":"10.13039\/501100001407","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vaccines"],"abstract":"<jats:p>Vaccination of cattle and buffaloes with Brucella abortus strain 19 has been the mainstay for control of bovine brucellosis. However, vaccination with S19 suffers major drawbacks in terms of its safety and interference with serodiagnosis of clinical infection. Brucella abortus S19\u2206per, a perosamine synthetase wbkB gene deletion mutant, overcomes the drawbacks of the S19 vaccine strain. The present study aimed to evaluate the potential of Brucella abortus S19\u0394per vaccine candidate in the natural host, buffaloes. Safety of S19\u2206per, for animals use, was assessed in guinea pigs. Protective efficacy of vaccine was assessed in buffaloes by immunizing with normal dose (4 \u00d7 1010 colony forming units (CFU)\/animal) and reduced dose (2 \u00d7 109 CFU\/animal) of S19\u0394per and challenged with virulent strain of B. abortus S544 on 300 days post immunization. Bacterial persistency of S19\u2206per was assessed in buffalo calves after 42 days of inoculation. Different serological, biochemical and pathological studies were performed to evaluate the S19\u2206per vaccine. The S19\u0394per immunized animals showed significantly low levels of anti-lipopolysaccharides (LPS) antibodies. All the immunized animals were protected against challenge infection with B. abortus S544. Sera from the majority of S19\u0394per immunized buffalo calves showed moderate to weak agglutination to RBPT antigen and thereby, could apparently be differentiated from S19 vaccinated and clinically-infected animals. The S19\u0394per was more sensitive to buffalo serum complement mediated lysis than its parent strain, S19. Animals culled at 6-weeks-post vaccination showed no gross lesions in organs and there was comparatively lower burden of infection in the lymph nodes of S19\u0394per immunized animals. With attributes of higher safety, strong protective efficacy and potential of differentiating infected from vaccinated animals (DIVA), S19\u0394per would be a prospective alternate to conventional S19 vaccines for control of bovine brucellosis as proven in buffaloes.<\/jats:p>","DOI":"10.3390\/vaccines9121423","type":"journal-article","created":{"date-parts":[[2021,12,7]],"date-time":"2021-12-07T03:21:05Z","timestamp":1638847265000},"page":"1423","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Immunization with Brucella abortus S19\u0394per Conferred Protection in Water Buffaloes against Virulent Challenge with B. abortus Strain S544"],"prefix":"10.3390","volume":"9","author":[{"given":"Pallab","family":"Chaudhuri","sequence":"first","affiliation":[{"name":"Division of Bacteriology and Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0557-7194","authenticated-orcid":false,"given":"Mani","family":"Saminathan","sequence":"additional","affiliation":[{"name":"Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8779-547X","authenticated-orcid":false,"given":"Syed Atif","family":"Ali","sequence":"additional","affiliation":[{"name":"Division of Bacteriology and Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gurpreet","family":"Kaur","sequence":"additional","affiliation":[{"name":"Division of Bacteriology and Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8758-076X","authenticated-orcid":false,"given":"Shiv Varan","family":"Singh","sequence":"additional","affiliation":[{"name":"Division of Bacteriology and Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan","family":"Lalsiamthara","sequence":"additional","affiliation":[{"name":"Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR 97239, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0518-2179","authenticated-orcid":false,"given":"Tapas K.","family":"Goswami","sequence":"additional","affiliation":[{"name":"Immunology Section, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ashwini K.","family":"Singh","sequence":"additional","affiliation":[{"name":"Chaudhary Charan Singh National Institute of Animal Health, Baghpat, Uttar Pradesh 250609, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandeep K.","family":"Singh","sequence":"additional","affiliation":[{"name":"Chaudhary Charan Singh National Institute of Animal Health, Baghpat, Uttar Pradesh 250609, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Praveen","family":"Malik","sequence":"additional","affiliation":[{"name":"Chaudhary Charan Singh National Institute of Animal Health, Baghpat, Uttar Pradesh 250609, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raj K.","family":"Singh","sequence":"additional","affiliation":[{"name":"Division of Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Khan, M.Z., and Zahoor, M. 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