We enrolled six low-income communities in Islamabad (Pakistan), four of which received an intervention consisting of a door-to-door low-cost waste collection service with centralised waste processing and recycling sites. Intervention communities underwent community-level and household-level mobilisation. The effect of the intervention on waste disposal behaviour, exposure to waste and synanthropic fly counts was measured using two cross-sectional surveys in 180 households per community.
Intervention communities had less favourable socio-economic indicators and poorer access to waste disposal services at baseline than control communities. Use of any waste collection service increased from 5% to 49% in the intervention communities (difference 44%, 95% CI 41%, 48%), but the increase was largely confined to two communities where post-intervention coverage exceeded 80% and 90%, respectively. An increase in the use of waste collection services was also found in the two control communities (from 21% to 67%, difference 47%, 95% CI 41%, 53%). Fly counts decreased by about 60% in the intervention communities (rate ratio 0.4, 95% CI 0.3, 0.4) but not in the control communities (rate ratio 1.52, 95% CI 1.1, 2.2). The decrease in fly counts was largely confined to the two high-coverage intervention communities.
Introduction of a low-cost waste collection service has the potential for high uptake in low-income communities and for decreasing the exposure to waste and synanthropic flies at household level. Intervention success was constrained by low uptake in half of the intervention communities.
我们在伊斯兰堡(巴基斯坦)注册了六个低收入社区,其中四个接受了干预,包括门到门的低成本废物收集服务,以及集中的废物处理和回收地点。干预社区进行了社区一级和家庭一级的动员。干预措施对废物处置行为的影响,对每个社区180户家庭进行了两次横断面调查,测量了废物暴露和同人蝇数量。与对照社区相比,干预社区的社会经济指标较差,获得废物处理服务的机会较差。在干预社区中,任何废物收集服务的使用从5%增加到49%(差异为44%,95%CI41%,48%),但增长主要限于两个社区,干预后覆盖率超过80%和90%,分别。在两个控制社区中,废物收集服务的使用也有所增加(从21%增加到67%,差异47%,95%CI41%,53%)。在干预社区中,苍蝇数量减少了约60%(比率为0.4,95%CI0.3,0.4),但在对照社区中没有减少(比率为1.52,95%CI1.1,2.2)。苍蝇数量的减少主要限于两个高覆盖率的干预社区。
引入低成本的废物收集服务有可能在低收入社区中大量吸收,并减少家庭对废物和同人蝇的接触。干预成功受到一半干预社区的低摄取的限制。