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Typhoid is a major public health concern in India, particularly among those dwelling in urban slums with poor sanitation. The disease caused by spread majorly through contaminated food and water. The economic burden of the disease is catastrophic and affects both families and the government making a strong case for including typhoid vaccines in the national immunization schedule. The World Health Organization has prequalified several vaccines and has recommended their use in endemic areas. While there is robust evidence for vaccination of children from India and other LMICs, the case for adult vaccination remains less clear. The Indian Association of Preventive and Social Medicine acknowledges the necessity to adopt a widespread typhoid immunization program, along with other preventive strategies, especially in the vulnerable pockets. IAPSM recommends focusing on newer-generation Typhoid Conjugate Vaccines (TCVs), which provide long-lasting and superior immunological benefits, and are effective across all ages including adults. IAPSM suggests routine use of Typbar-TCV™ for adults up to 45 years old in India. The organization also highlights the necessity for post-marketing surveillance of these vaccines, to monitor the long-term safety and effectiveness of various vaccines in different communities. IAPSM encourages members to take front-line efforts in their community health service areas, and finally appeals for the development of vaccines to cover a more extensive range of Salmonella infections so that control over typhoid can be strengthened.
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http://dx.doi.org/10.4103/ijcm.ijcm_740_24 | DOI Listing |
Front Med (Lausanne)
August 2025
School of Medicine, Universidad Norbert Wiener, Lima, Peru.
Introduction: Vaccination against COVID-19 has generated a dramatic reduction in deaths and infections worldwide. However, there may be cross-reactivity with numerous biochemical and immunological markers. The Widal test for the detection of typhoid fever is an antigen-antibody test that can be affected by vaccination, causing errors in the results, so we determined the frequency of false positive results of the Widal test in adults vaccinated with Commirnaty (Pfizer -BioNtech) and BBIBP-CorV (Sinopharm) vaccines.
View Article and Find Full Text PDFLancet
September 2025
Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK; Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool. Electronic address:
Enteric fever, caused by the human-restricted bacteria Salmonella enterica serovar Typhi (typhoid) and Salmonella enterica serovar Paratyphi A, B, and C (paratyphoid), affects persons residing in, or travelling from, areas lacking safe water, sanitation, and hygiene infrastructure. Transmission is by the faecal-oral route. A gradual fever onset over 3-7 days with malaise, headache, and myalgia is typical.
View Article and Find Full Text PDFEBioMedicine
September 2025
Oxford Vaccine Group, Department of Paediatrics, University of Oxford, Oxford, United Kingdom; NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom; Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.
Background: Invasive non-typhoid Salmonella (iNTS) is a leading cause of morbidity and mortality in sub-Saharan Africa. We assess the safety and immunogenicity of an outer membrane vesicle vaccine (iNTS-GMMA) derived from the two most common serovars, S. Enteritidis (SEn) and S.
View Article and Find Full Text PDFSci Rep
September 2025
Department of Basic Health Sciences, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia.
Salmonella enterica subsp. enterica serotype Typhi (Salmonella typhi) is the cause of typhoid fever, a severe public health issue in impoverished countries with inadequate sanitation. Despite the availability of therapies, infection rates remain high, underscoring the critical need for an effective and long-lasting vaccine.
View Article and Find Full Text PDFVaccines (Basel)
July 2025
College of Veterinary Medicine, Jeonbuk National University, Specialized Campus, Iksan 54596, Republic of Korea.
Fowl typhoid (FT), a septicemic infection caused by Gallinarum (SG), and H9N2 avian influenza are two economically important diseases that significantly affect the global poultry industry. We exploited the live attenuated Gallinarum (SG) mutant JOL3062 (SG: ∆ ∆ ∆) as a delivery system for H9N2 antigens to induce an immunoprotective response against both H9N2 and FT. To enhance immune protection against H9N2, a prokaryotic and eukaryotic dual expression plasmid, pJHL270, was employed.
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