Typhoid remains a persistent contributor to childhood morbidity in communities lacking sanitation infrastructure. Typhoid conjugate vaccine (TCV) is effective in reducing disease risk in vaccinees; however, the duration of protection is unknown. This study measured the longevity of immune response to TCV in children aged under 10 years in Hyderabad, Pakistan, where an outbreak of extensively drug-resistant typhoid has been ongoing. A subset of children who received the TCV as part of the outbreak response were enrolled purposively from March 2018 to February 2019. The participants were followed up until January 2023. Blood samples were taken at baseline, 4-6 weeks, 6 months, and annually 1-4 years after vaccination to measure anti-Vi immunoglobulin (Ig) G levels using enzyme-linked immunosorbent assay. Active phone-based surveillance was performed to identify breakthrough infections. Blood culture was offered to any child with a history of fever ≥3 days within the last 7 days. A total of 81 children received a second dose of TCV in November 2019 during a catch-up campaign organized by the Sindh government. Nearly all participants seroconverted (802 of 837; 95.8%) at 4-6 weeks after vaccination. A total of 4 years after vaccination, 438 of 579 (75.6%) participants remained above the seroconversion threshold. The geometric mean titer (U/mL) of anti-Vi IgG at 4-6 weeks was 832.6 (95% confidence interval [CI]: 768.0-902.6); at 4 years after vaccination, the geometric mean titers in children aged 6 months to 2 years (12.6, [95% CI: 9.8-16.3]) and >2-5 years (40.1, [95% CI: 34.4-46.6]) were lower than in children aged >5-10 years (71.1, [95% CI: 59.5-85.0]). During 4 years of follow-up, nine children had culture-confirmed Salmonella Typhi infection; these infections occurred after a median duration of 3.4 years. All enteric fever cases seroconverted at 4-6 weeks after vaccination and seven (70.0%) remained seroconverted 4 years after vaccination. We observed 95.8% seroconversion after a single dose of TCV. There was a decay in anti-Vi IgG titers, and, at 4 years, approximately 75.6% remained seroconverted. There was a faster decay in children aged ≤2 years. Breakthrough infections were documented after a median 3.4 years after vaccination.

This study aimed to evaluate the parental acceptance of Typhoid Conjugate Vaccine (TCV) and to determine the predictors of TCV vaccination status among children in an outbreak setting of extensively drug resistant (XDR) typhoid fever in Karachi, Pakistan. A cross-sectional survey using the WHO recommended rapid vaccine coverage assessment technique was conducted. Out of 11, four union councils (UCs) in Lyari Town were randomly selected. A parent or primary caretaker from the eligible household was interviewed. Data were collected using a locally validated vaccine attitudes scale (VAS). Sum of scores was calculated for VAS. A higher score denoted negative attitudes and perceptions regarding TCV and vice versa. Multivariable logistic regression was performed to determine the predictors of TCV vaccination status. Based on the 14-item parental VAS, 78.0 % of the parents had a score between 0 to <40 and 22 % had a score ≥40. VAS score of <40 was significantly associated with higher odds of receiving TCV during the campaign setting (adjusted Odds Ratio (aOR): 1.30; 95 % Confidence Interval (CI): 1.02, 1.66). The odds of receiving TCV vaccination were higher among children whose parents were aware of the ongoing vaccination campaign in the area (aOR: 4.57; 95 % CI: 2.93, 7.12) and expressed willingness to get their child vaccinated against typhoid fever (aOR: 2.54; 95 % CI: 1.82, 3.55). Parental awareness of the ongoing vaccination campaign, positive perception and attitudes towards vaccine were found to be significantly associated with TCV vaccination among children. Appropriately structured pre-vaccination awareness campaigns focused on childhood vaccination targeted towards parents are necessary to improve parental awareness, attitude and behavior towards vaccination.

Background and Objectives: Infectious disease outbreaks are a major challenge for public health systems worldwide, especially for healthcare workers (HCWs). Taif city, in Saudi Arabia, has a high population density and is a tourist destination, which puts it at a high risk of infectious disease outbreaks. Despite its geographical importance, no previous study has been conducted that focuses on assessing the preparedness of healthcare workers in Taif city for managing infectious disease outbreaks. Therefore, we aimed to assess the overall level of preparedness among HCWs in healthcare facilities across Taif city and identify the challenges they face when managing infectious disease outbreaks. Materials and Methods: We conducted a cross-sectional study from October to December 2024 among 294 healthcare workers, using a structured questionnaire. We assessed the sociodemographic characteristics, infection prevention and control (IPC) training received by HCWs, the level of preparedness for managing infectious disease outbreaks, and their level of knowledge (low, moderate, or high). The association between sociodemographic characteristics and knowledge from having received IPC training and the level of preparedness was assessed using binary logistic regression. A p-value of ≤ 0.05 was considered as significant. Results: Around 31.7% of the participants were aged 31–40 years, with 59.2% of them being female. Among the HCWs we assessed, 44.6% were nurses and 31.3% of the HCWs were from hospitals with a bed capacity of over 500. Only 16.3% of HCWs felt fully prepared on a personal level and only 20.7% believed their facility was fully prepared for managing an outbreak. A low level of knowledge was reported among 71.8% of the participants. The odds of having received IPC training were significantly higher among HCWs aged 41–50 years (AOR = 15.7; 95% CI = 4.26–58.1), for those working in the inpatient department (AOR = 6.3; 95% CI = 1.46–27.05), and for those with a moderate level of knowledge (AOR = 0.12; 95% CI = 0.03–0.5). The odds of being fully prepared for an infectious disease outbreak were significantly higher for males (AOR = 2.58; 95% CI = 1.18–5.63) and those working in the in-patient department (AOR = 6.87; 95% CI = 1.7–27.8) and significantly lower for those with a low level of knowledge (AOR = 0.19; 95% CI = 0.06–0.61). Conclusion: Even though many HCWs have undergone IPC training, our findings highlight gaps in both knowledge and overall preparedness among healthcare workers in Taif city. Regular refresher courses, improved resource allocation, and implementing scenario-based emergency drills may help in improving the overall knowledge and preparedness of HCWs.

Background and Objectives: Quality of life (QoL) among healthcare professionals (HCPs) is a critical determinant of workforce performance and patient care. Therefore, the present study aimed to assess QoL and its determinants among HCPs in the Hail region, Saudi Arabia. Methods: In this cross-sectional study, data were collected from 388 HCPs from multiple healthcare facilities using the WHOQOL-BREF questionnaire. The survey was conducted from August 2025 to October 2025. Convenience sampling was used, and QoL domain scores were calculated according to WHO guidelines. We applied Spearman’s correlation test to assess correlations across domains and logistic regression to identify factors associated with individual and overall QoL. Results: Among the HCPs studied, overall QoL had a median score of 80, while the physical, psychological, social, and environmental domains showed moderate scores with considerable variability. We found a significant positive correlation between the various QoL domains (p = 0.001). Non-Saudi nationals (p = 0.010) and participants with chronic diseases (p = 0.032) reported significantly lower overall QoL. Furthermore, age group, work experience, HCPs category, work setting, nationality, and the presence of chronic disease were significant predictors across multiple QoL domains. Conclusions: The findings highlight the need for targeted workplace and health support interventions to manage the mental and physical health of HCPs, particularly for non-Saudi HCPs and those with chronic conditions, through tailored training, education, and lifestyle-based support programs.