Asian Pacific Journal of Tropical Medicine

533-545

Authors: Yocyny Surendran, Mahalingam Nandikha, Syafinaz Amin-Nordin, Sandeep Kumar Dhanda, Mohamad Ridhuan Mohd Ali, Narcisse MS Joseph

Objective: To assess the efficacy of various types of vaccines developed for leptospirosis. Methods: A comprehensive search was conducted in three databases: PubMed, Scopus, and Cochrane Library. Two authors (YS and MN) selected the articles based on manual screening. The study eligibility criteria are all Leptospira species regardless of any cluster (pathogenic, intermediate and non-pathogenic). This study recorded articles with positive and negative results and showed a comparison among various membrane proteins as vaccine candidates. The studies on the effectiveness of outer membrane protein as vaccine candidates were also included. The articles obtained in the databases were imported into the WPS spreadsheet, and duplicate documents were removed manually. Results: A total of 24 studies were included in the review, which evaluated various types of leptospirosis vaccines. Multiple vaccines were developed and tested; however, the heterogeneity of Leptospira species pose a challenge. As an effective approach, an epitope based vaccine shows quite a promising result. However, sufficient validation, testing and clinical trials are required. Conclusions: Developing an effective vaccine for leptospirosis remains a global health priority. While significant progress has been made in recent years, there is a need for further research to optimize vaccine development and to ensure that vaccines are accessible and effective for high-risk populations.

558-564

Authors: Frans Dany, Kindi Adam, Sarwo Handayani, Holy Arif Wibowo, Rita Marleta Dewi, Natalie Laurencia Kipuw, Khariri, Widoretno

Objective: To identify circulating HPV types among urban Indonesian women and their specific co-infection patterns in bid to curb HPV infection in the general population and minimize its complications. Methods: Urban Indonesian women from general population were selected as sample framework. Sample size and distribution across regions were determined by the Indonesian Bureau of Statistics (Badan Pusat Statistik, BPS), which represented the national level. Up to 35 408 cervical swab specimens were collected from August to September 2016 in 34 Indonesian provinces, categorized into six regions based on the development criteria set by the Ministry of National Development Planning (Badan Perencanaan Pembangunan Nasional, BAPPENAS). From all 1 874 samples identified as HPV-positive, hybrid capture was implemented to evaluate type-specific HPV. This study analyzed descriptive data to determine the core-cluster of HPV combination. Co-occurrence HPV network was assessed using ‘qgraph’ package version 1.6.3 and computed in R version 3.6.3. Two-HPV association was analyzed in logistic regression using bias-reduction generalized linear model (brglm2) package version 0.5.1 adjusted by age and six main Indonesian regions. Results: The logistic regression analysis demonstrated that HPV type 52 had rare relationship despite its common co-occurrence, cementing its role in single HPV infection. HPV type 16 and 18 tended to form infection cluster and were strongly associated with other types. Conclusions: HPV type 52 was the most frequent HPV type among urban Indonesian women and accounted for most single infection cases. Concurrently, HPV 16 and HPV 18 accounted for most multiple infection cases and had strong tendency to attract other types, which may add further complications. However, due to lack of cytology and histological examination and information for other potential determinants, further in-depth studies are necessary to confirm whether these infection patterns truly connect to certain clinical outcomes.

573-574

Authors: Abdullah, Riaz Muhammad, Aiman Waheed, Sher Ali, Muddasir Khan

None.