Tropical Medicine & International Health最新文献

Objectives: This study reports on the prevalence of hepatitis B virus (HBV) in children in Guinea-Bissau before the hepatitis B vaccine was introduced.

Methods: Cross-sectional study. From 2005 to 2008, 187 children aged 18 months were enrolled in a vaccine trial and had blood samples taken to test for HBV (HbsAg, anti-HBs and anti-HBc), hepatitis C virus (HCV) and HIV.

Results: HBsAg prevalence was 11.2% and prevalence of any HBV serological marker was 16.0%. No children were positive for HCV. One was positive for HIV-1.

Conclusions: The prevalence of HBsAg was high compared to other sub-Saharan African countries pre-immunisation, underscoring the importance of broad and sustained HBV vaccination. This study indicates that the majority of HBV transmission is horizontal during childhood in Guinea-Bissau.

Background: This study assessed the moderating effect of social support on the association between experienced stigma versus anxiety, depression and loneliness among people with drug-resistant tuberculosis.

Methods: A descriptive cross-sectional study was conducted among 203 adults on treatment for drug-resistant tuberculosis for at least 8 weeks. Validated scales were used to assess experienced stigma, anxiety, depression, loneliness and social support. Partial correlations and hierarchical multiple regression were used to determine the moderating effect of social support on the association between experienced stigma versus anxiety, depression and loneliness. The interaction was visualised using slope analysis.

Results: Anxiety, loneliness and depression were reported by 148 (72.9%), 114 (56.2%) and 128 (63.1%) of the 203 participants, respectively. Experienced stigma was positively associated with depression (B = 0.428, p < 0.001), anxiety (B = 0.374, p < 0.001) and loneliness (B = 0.285, p = 0.001). Social support was negatively associated with depression (B = -0.255, p < 0.001), anxiety (B = -0.406, p < 0.001) and loneliness (B = -0.270, p = 0.001). The impact of experienced stigma on depression was different at low (B = 0.567, SE = 0.115, p < 0.001) and high (B = 0.275, SE = 0.253, p = 0.024) groups of social support. Similarly, at low social support, the effect of experienced stigma on loneliness (B = 0.491, SE = 0.250, p < 0.001) and anxiety (B = 0.254, SE = 0.060, p = 0.044) was different compared to the effect of experienced stigma on loneliness (B = 0.275, SE = 0.253, p = 0.024) and anxiety (B = 0.127, SE = 0.094, p = 0.307) at high group of social support.

Conclusion: In this study, social support reduced the effects of experienced stigma on anxiety, depression and loneliness suggesting that improving social support among people with drug-resistant tuberculosis is crucial in reducing the negative effects of stigma on anxiety, depression and loneliness.

Objectives: A 6-week course of tetracycline eye ointment is an alternative to single -dose oral azithromycin in annual mass drug administration for trachoma control. Compliance with the recommended tetracycline eye ointment regimen has not been well characterised when administered as part of a trachoma control program.

Methods: A routine mass drug administration for trachoma was carried out in 40 communities in the Amhara region of Ethiopia. Two tubes of tetracycline eye ointment, to be administered twice daily for 6 weeks, was offered to all children under 6 months of age, to pregnant women who declined to take azithromycin, and to all individuals with a macrolide allergy. Seven weeks following the mass drug administration, a treatment compliance survey was performed for all community members documented to have received tetracycline eye ointment during the mass drug administration.

Results: Of the 491 individuals documented as having received tetracycline eye ointment from the treatment records, 367 completed the survey, of which 214 recalled being offered tetracycline eye ointment. A total of 105 (49%) respondents reported taking ≥1 daily dose of tetracycline eye ointment on most days of the week for at least the first week. Only 20 (9%) respondents reported taking at least 1 tetracycline eye ointment dose per week for 6 weeks. The most common reasons for low compliance included 'saving it for a future infection' and 'stopped because I (or my child) seemed healthy'. The odds of low compliance were greater for those who reported not having adequate counselling (e.g., odds ratio [OR] 5.3, 95% CI 2.5-28.9 when low compliance was defined as not taking a tetracycline eye ointment dose for most days of at least the first week).

Conclusions: Compliance with tetracycline eye ointment was low when administered by a trachoma program during a routine mass drug administration, especially for those reporting inadequate counselling. Further research with a larger sample size and varied settings is warranted to better understand and improve compliance.

Mycobacterium marinum is a non-tuberculous mycobacterium which can be found in naturally occurring, non-chlorinated water sources and is a known pathogen that affects fish. In humans, M. marinum typically results in cutaneous lesions, it can occasionally lead to more invasive disorders. We discuss four cases of M. marinum-related cutaneous infections examined in a tertiary care facility. We want to draw attention to the challenges of accurately diagnosing this infection, stress the significance of having a high level of clinical suspicion in order to identify it, and discuss the available treatment choices.

Globally, tuberculosis is a leading cause of infectious disease deaths. China ranks third among the 30 high-burden countries for tuberculosis and accounts for approximately 7.4% of the cases reported worldwide. Since very few studies have investigated the age difference in tuberculosis prevalence in mainland China, therefore, the preliminary characterisation of age differences in tuberculosis patients is not well understood. The data of reported sputum smear-positive, tuberculosis and sputum smear-negative cases in 340 prefectures from mainland China were extracted from the China Information System for Disease Control and Prevention from January 2009 to December 2018. Multiple statistical analysis and GIS techniques were used to investigate the temporal trend and identify the spatial distribution of sputum smear-positive, tuberculosis and sputum smear-negative cases in the study area. The results showed that the incidence of sputum smear-positive and tuberculosis has dropped to a stable level, while sputum smear-negative exhibited a rising trend. Additionally, sputum smear-positive, tuberculosis and sputum smear-negative are still highly prevalent in northwestern and southwestern regions of China. Interestingly, the young adult group (20-50 age) and elder group (>50 age) are more susceptible to being infected with tuberculosis, while lower infection levels were recorded in the juvenile group (<20 age). The present study investigated the temporal-spatial distribution of sputum smear-positive, tuberculosis and sputum smear-negative cases in mainland China before the COVID-19 pandemic breakout, which would help the government agency establish an effective mechanism of tuberculosis prevention in high-risk periods and high-risk areas in the study region.

Objectives: Diabetes has been related to higher risk and poor prognosis of patients with tuberculosis, while the influence of prediabetes on the treatment outcome of patients with tuberculosis remains not determined. A meta-analysis was performed to evaluate the influence of prediabetes on treatment outcome of patients with tuberculosis.

Methods: Relevant cohort studies were acquired through a search of Medline, Embase, and Web of Science databases. To minimise the influence of between-study heterogeneity, a randomised-effects model was used to pool the results.

Results: Eight prospective cohort studies including 3001 patients with tuberculosis were available for the meta-analysis. Among them, 752 (25.1%) were with prediabetes at baseline, and the patients were followed for a mean duration of 17.7 months. It was shown that compared to patients with normoglycemia, those with prediabetes were associated with a higher incidence of unfavourable treatment outcome (risk ratio [RR]: 1.41, 95% confidence interval [CI]: 1.02 to 1.96, p = 0.04; I² = 56%). Subgroup analysis did not support that difference in study country (Asian or non-Asian), diagnosis (pulmonary tuberculosis only or also with extrapulmonary tuberculosis), mean age, follow-up duration, or study quality score had significant influence on the results (p for subgroup difference all >0.05). However, prediabetes at baseline was not associated with an increased risk of all-cause mortality during follow-up (RR: 1.59, 95% CI: 0.75 to 3.38, p = 0.23; I² = 54%).

Conclusions: Patients with tuberculosis and prediabetes may have a higher risk of unfavourable treatment outcome compared to patients with normoglycemia.

Background: There are no trend studies on various health risk behaviours among adolescents in Uruguay. Therefore, this study looked at trends in a number of health-risky behaviours among adolescents in Uruguay from three separate surveys.

Methods: Data from 9272 adolescents (age range: 11-16 years), who took part in three cross-sectional national in-school surveys in Uruguay in 2006, 2012 and 2019 were analysed. A self-administered survey was used to evaluate 24 health risk behaviours. By using logistic regression analyses to treat the study year as a categorical variable and adjusting food insecurity and age, linear trends were examined.

Results: We found a significant increase in the prevalence of being overweight, having obesity, inadequate fruit intake, sedentary behaviour in leisure-time, physical inactivity, bullying victimisation, loneliness, suicidal ideation, and sexual activity. We found a significant decrease in current cigarette use, physical fighting and current alcohol use. Among males, a significant increase of non-condom use, and a decrease in current other tobacco use (other than cigarettes), being physically attacked and the number of sexual partners. Among females, we found an increase in food insecurity, trouble from alcohol use, multiple sexual partners, and sleep problems.

Conclusion: Overall, from 2006 to 2019, there was a decrease in seven health risk behaviours among boys and/or girls. Among boys, there was an increase in 10 health risk behaviours and among girls, 15 health risk behaviours increased, highlighting adolescent girls' greater vulnerability, thereby perpetuating further gendered health inequalities. In Uruguay, school health programmes for adolescents are recommended.