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http://dx.doi.org/10.1016/S0140-6736(24)01507-1 | DOI Listing |
Heliyon
November 2024
Laboratory of Microbial and Cancer Genomics, Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh.
Indian J Med Res
December 2024
ICMR-National Institute of Occupational Health, Ahmedabad, Gujarat, India.
Enteric fever is caused by the infection of Gram-negative bacteria, Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi (S. Paratyphi) A, B and C, through contaminated food and water. The disease almost exclusively affects the populations living in low- and middle-income countries, with the World Health Organization Southeast Asian Region (WHO SEAR) having the highest endemicity.
View Article and Find Full Text PDFJ Ayub Med Coll Abbottabad
December 2024
Federal Medical College, Islamabad-Pakistan.
Background: Typhoid is a major health concern. Drug-resistant cases of typhoid have given rise to new debates. Azithromycin has shown adequate results.
View Article and Find Full Text PDFGut Microbes
November 2024
College of Veterinary Medicine, Southwest University, Beibei, Chongqing, China.
Non-typhoidal (NTS) is a major global foodborne pathogen that poses a major public health concern worldwide, and no vaccines are available for protecting against infection of multiple serotypes, therefore, the development of vaccines to provide broad protection is valuable. In this work, we aimed to regulate lipopolysaccharide (LPS) synthesis of live for exposing conserved protein antigens on the outer membrane while maintaining smooth LPS patterns to keep their original ability to invade host cells for inducing cross-protection against infection of multiple serotypes. We generated a series of mutants defective in genes to affect the length of LPS.
View Article and Find Full Text PDFNat Commun
October 2024
Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
Systemic vaccination of macaques with V1-deleted (ΔV1) envelope immunogens reduce the risk of SIV acquisition by approximately 60%, with protective roles played by V2-specific ADCC and envelope-specific mucosal IL-17NKp44 innate lymphoid cells (ILCs). We investigated whether increased mucosal responses to V2 benefit vaccine efficacy by delivering oral nanoparticles (NPs) that release V2-scaffolded on Typhoid Toxin B (TTB) to the large intestine. Strikingly, mucosal immunization of male macaques abrogated vaccine efficacy with control TTB or empty NPs, but vaccine efficacy of up to 47.
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