Integrating wastewater surveillance and meteorological data to monitor seasonal variability of enteric and respiratory pathogens for infectious disease control in Dhaka city.

Publication date: May 21, 2025

Seasonal meteorological variations influence the spread of infectious diseases. Wastewater surveillance helps understanding pathogen transmission dynamics, particularly in urban areas of climate-vulnerable countries like Bangladesh. We analysed 54 weeks of wastewater surveillance, clinical surveillance, and meteorological data from Dhaka, Bangladesh. Samples from 11 sites were tested for Vibrio cholerae (V. cholerae), SARS-CoV-2, Salmonella enterica subspecies enterica serovar Typhi (S. Typhi), and Group A rotavirus. Diarrhoeal Disease Surveillance data were sourced from icddr,b, and meteorological data from the Bangladesh Meteorological Department. Regression models adjusted for site and time variations were used for statistical analysis. Proportion of confirmed cholera cases among the diarrhoeal disease surveillance recruits were highest during post-monsoon (coef: 2. 53; 95 % CI: 0. 41 to 4. 67; p = 0. 029). V. cholerae log10 concentrations in wastewater were positively associated with pre-monsoon (coef: 0. 93; 95 % CI: 0. 26 to 1. 58; p = 0. 010), while SARS-CoV-2 peaked during monsoon (coef: 1. 85; 95 % CI: 0. 96 to 2. 73; p

Concepts Keywords
Dhaka Infectious agents
Diarrhoeal Meteorological factors
Salmonella Pathogen dynamics
Surveillance Seasonal variations
Wastewater surveillance

Semantics

Type Source Name
disease MESH infectious disease
pathway REACTOME Infectious disease
disease MESH pathogen transmission
disease IDO site
disease MESH cholera
disease IDO pathogen

Original Article

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