Leptospirosis is a significant public health concern worldwide, as it imposes a substantial economic burden on the global economy. Despite a comprehensive search of the relevant literature, few studies evaluating the economic burden experienced by leptospirosis patients were identified. In particular, very few studies thoroughly examined the cost components, including direct, indirect and intangible costs. This paucity of evidence further motivates the need to conduct a more focused search using a systematic review approach. Thus, this study aims to systematically review the global literature on the magnitude and aspects of the direct, indirect and intangible costs incurred by leptospirosis patients and the methods available for assessing these costs.

This review will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols 2015 guidelines. The Population, Intervention, Comparison, Outcomes, Study Design framework was used to develop the review questions. The search strategy will comprise two key term blocks: ‘Leptospirosis’ and ‘Economic cost’. A comprehensive literature search will be conducted in PubMed, Web of Science, Scopus, MEDLINE, CINAHL, the Cochrane Library, EconStor and IDEAS to collect publications from inception to July 2025. The search will be limited only to English-language and peer-reviewed publications. The Mixed Methods Appraisal Tool will be used to assess the quality of eligible studies. Extracted cost data will be categorised into direct, indirect and intangible costs. A meta-analysis will be conducted to quantify the magnitude of these costs if sufficient methodological and contextual homogeneity exists. Moreover, a narrative synthesis will be performed to analyse the qualitative data related to intangible costs.

As this study will use secondary data, ethical approval is not required. The systematic review’s findings will be published in a scientific journal and presented at relevant conferences to address the knowledge gap regarding the economic burden (including direct, indirect and intangible costs) faced by leptospirosis patients. The results of this systematic review will guide policies for prioritising prevention, improving surveillance and efficiently allocating resources to control leptospirosis.

PROSPERO CRD 42024585056.

To assess awareness of colorectal cancer (CRC) symptoms and risk factors among adults attending Sri Lanka’s largest tertiary care hospital, and to identify sociodemographic predictors of awareness.

Descriptive cross-sectional study.

Outpatient clinics at the National Hospital of Sri Lanka (NHSL), the country’s largest tertiary care centre.

A total of 506 adults (≥18 years) recruited via convenience sampling. Data were collected from May 2022 to May 2023 at the outpatient clinics of the NHSL, the country’s largest tertiary care centre. Eligible participants included clinic attendees as well as accompanying persons of attendees, provided they met inclusion criteria. Individuals with known gastrointestinal conditions or malignancies were excluded.

Primary outcomes: awareness scores of CRC symptoms and risk factors using a culturally adapted Bowel Cancer Awareness Measure questionnaire.

Secondary outcomes: predictors of awareness based on sociodemographic variables.

58.7% (n=297) of participants could not name any CRC symptoms unprompted; blood in stools (n=93, 18.4%) was the most identified symptom unprompted. Prompted awareness improved markedly, with 75.3% (n=381) identifying blood in stools when provided with a list. Similarly, 44.3% (n=224) could not identify any CRC risk factors unprompted; excessive alcohol intake (n=368, 72.7%) and low fibre intake (n=324, 64.0%) were the most commonly recognised risk factors when prompted. The mean symptom awareness score was 5.63 (SD=2.55), corresponding to ‘fair’ awareness, and the mean risk factor awareness score was 5.47 (SD=2.63), also indicating ‘fair’ awareness. Female gender (B=0.669, p=0.008; n=237) and older age (B=0.023, p=0.034) were significantly associated with higher symptom awareness. Awareness was significantly lower among participants with lower education (B = –0.104, p=0.018; n=219) and among the unemployed (B = –0.175, p=0.045; n=152).

Unprompted awareness of CRC symptoms and risk factors was suboptimal in this population, with marked gaps in spontaneous recall. Public health campaigns should prioritise men, younger adults and individuals with lower education to enhance CRC literacy and promote earlier detection.