The attenuated Salmonella typhi strain Ty21a is the main constituent of Vivotif, the only attenuated live oral vaccine against typhoid fever. In comparison with antibiotics, the 'magic bullets' which Paul Ehrlich was striving for to treat infectious diseases, this vaccine should be viewed as a 'magic shield', because rather than treating typhoid fever after the infection has started, immunisation with this vaccine strain prevents infection and disease by the induction of specific immune responses. Ty21a is also an attractive carrier for the delivery of heterologous antigens. Recently, we successfully used Ty21a for antigen delivery via the haemolysin secretion system of Escherichia coli, which allows efficient protein secretion from the carrier bacteria.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000100515 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Functional role of the biofilm regulator CsgD in sv. Typhi.
Front Cell Infect Microbiol
December 2024
Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States.
Introduction: Typhoid fever is an infectious disease primarily caused by sv. Typhi ( Typhi), a bacterium that causes as many as 20 million infections and 600,000 deaths annually. Asymptomatic chronic carriers of S.
View Article and Find Full Text PDFPericardial Abscess Due to Salmonella Typhi Infection.
Am J Trop Med Hyg
December 2024
Department of Infectious Diseases, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China.
Typhoid fever is a human-specific disease caused by subspecies of Salmonella enterica (Salmonella Typhi). It spreads through ingestion of contaminated food or water and is diagnosed through blood culture or bone marrow culture. It typically presents as an intestinal infection, with a few patients developing severe disseminated infections.
View Article and Find Full Text PDFAdding Virome Capture Metagenomic Sequencing to Conventional Laboratory Testing Increases Unknown Fever Etiology Determination in Bamako, Mali.
Am J Trop Med Hyg
December 2024
University Clinical Research Center, University of Sciences, Techniques, and Technologies of Bamako, Bamako, Mali.
Unexplained fever poses significant diagnostic challenges in resource-limited settings like Bamako, Mali, where overlapping endemic diseases include malaria, HIV/AIDS, yellow fever, typhoid, and others. This study aimed to elucidate the infectious etiologies of acute febrile illnesses in this context. Acute febrile patients of any age were enrolled after informed consent or assent.
View Article and Find Full Text PDFSalmonella infections are widely known to cause gastroenteritis, especially in areas of poor hygiene and sanitation. Common symptoms include sustained fever, chills, and abdominal pain. Sepsis, disseminated intravascular coagulation (DIC), various neurological manifestations, and multiorgan failure are other uncommon presentations.
View Article and Find Full Text PDFEvaluation of a point-of-care immunochromatographic assay for enteric fever in Dhaka, Bangladesh: a prospective diagnostic accuracy study.
Lancet Microbe
December 2024
Massachusetts General Hospital, Harvard Medical School, Harvard T.H. Chan School of Public Health, Boston, MA, USA. Electronic address:
Background: There is a shortage of rapid, accurate, and low-cost assays for diagnosing enteric fever. The dual-path platform for typhoid (DPPT) assay had high accuracy in retrospective studies with banked plasma samples. We aimed to evaluate the diagnostic accuracy of the DPPT assay in a prospective study using fingerstick capillary blood.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!