Population group selection
septic
SECONDARY
We reached five types of frontline waste and sanitation workers in the study: septic tank/pit emptiers, solid waste collectors, drain cleaners, road sweepers, and medical waste handlers. As the workers were involved in more than one job at a time (e.g., the pit emptier was also engaged in drain cleaning), we categorized them based on their level of involvement. For instance, we selected them as road sweepers if the workers were primarily involved in sweeping while other tasks were secondary. We reached both listed workers (listed in the city offices as waste and sanitation workers) and non-listed workers (working individually/informally/for private organizations) from both control and intervention areas.