A community based case-control study to determine the risk factors of dengue fever in Bangladesh

Int. J. Environ. Sci. Technol.

2022

Dengue fever is a mosquito-borne viral disease caused by the dengue virus of the Flaviviridae family and is responsible for colossal health and economic burden worldwide. This study aimed to investigate the effect of environmental, seasonal, and spatial variations on the spread of dengue fever in Sri Lanka. The study used secondary data of monthly dengue infection and the monthly average of environmental parameters of 26 Sri Lankan regions from January 2015 to December 2019. Besides the descriptive measurements, Kendall's tau_b, Spearman's rho, and Kruskal-Wallis H test have been performed as bivariate analyses. The multivariate generalized linear negative binomial regression model was applied to determine the impacts of meteorological factors on dengue transmission. The aggregate negative binomial regression model disclosed that precipitation (odds ratio: 0.97, p < 0.05), humidity (odds ratio: 1.05, p < 0.01), and air pressure (odds ratio: 1.46, p < 0.01) were significantly influenced the spread of dengue fever in Sri Lanka. The bioclimatic zone is the vital factor that substantially affects the dengue infection, and the wet zone (odds ratio: 6.41, p < 0.05) was more at-risk than the dry zone. The climate season significantly influenced dengue fever transmission, and a higher infection rate was found (odds ratio: 1.46, p < 0.01) in the northeast monsoon season. The findings of this study facilitate policymakers to improve the existing dengue control strategies focusing on the meteorological condition in the local as well as global perspectives.

Section: Introductionmentioning

confidence: 99%

Impact of environmental factors on the spread of dengue fever in Sri Lanka

Faruk

Jannat

Int. J. Environ. Sci. Technol.

2022

Knowledge and prevention practice against dengue vectors among dengue patients and general people in Chattogram, Bangladesh

Mehejabin

Rashid³

2022

F1000Res

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Background: Due to the absence of an effective vaccine for dengue, community-led vector control strategy could be a sustainable approach for dengue prevention. Therefore, this study aimed to assess people’s knowledge of dengue vectors and the practice of preventive measures to avoid vector mosquitoes by means of a structured questionnaire. Methods: A telephone-based survey was conducted between July 2019 to December 2019 from confirmed dengue patients and general people without dengue fever living in Chattogram, Bangladesh. Patients’ contact information was collected from two tertiary care hospitals. The level of knowledge and preventive practice were determined through the scoring of each participant against their responses. The association of individuals’ knowledge and practice scores with demographic variables was measured through chi-square and binary logistic analyses. Results: Overall, 61.9% of participants (72% case and 51.7% non-case) had good knowledge, whereas only 10.6% of them (12.7% case and 8.7% non-case) strongly practiced the mosquito prevention methods. However, significant variation in the level of knowledge was found between the two groups. Urban residents had 2.20 times higher knowledge compared to semi urban. Students and government officials had 3.39 times and 3.17 times better knowledge than general workers respectively. Permanent residents had 2.01 times better knowledge in comparison to the people living in temporary housing. In terms of mosquito preventive measures, semi-urban people showed 3.19 times (CI=0.97-10.52) stronger practice compared to rural people. Conclusions: This study suggests that dengue control strategies should focus on the effective practice of mosquito prevention by engaging community people.

Knowledge and awareness of Neglected Tropical Diseases among senior medical students and intern doctors in Bangladesh

Susan

Mawa

et al. 2023

Preprint

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Proper knowledge and awareness of healthcare professionals are imperative for the control and eradication of Neglected tropical diseases (NTDs). The study aimed to measure the level of knowledge and awareness of medical students and intern doctors in Bangladesh to facilitate control strategies. Data were collected through an online questionnaire and ranked the participants by scoring their responses as one for correct and zero for wrong answers. Later, the rank of respondents was analyzed with the socio-demographic characteristics using the Chi-square and Fisher exact probability tests. Of the total 31.4%, (32.2% students and 29.8% interns) participants achieved a good score while 24.6% (24.5% students and 24.8% intern doctors) demonstrated poor rank. The geographical location of participants and previous experience of seeing any NTD patients were significantly associated (P = 0.001) with the level of knowledge and awareness. Most of them (76.4%) acknowledged participating in control activities of NTDs in Bangladesh and marked highly the importance of mass awareness (83.8%) and easy diagnostic facilities (71.2%). We advocate focusing on NTDs in the medical education curriculum and professional training especially on the common NTDs of Bangladesh to confirm the active involvement of these primary stakeholders in prevention and control programs.