Litvoc J, Goldbaum M, da Silva G R
Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo, Brasil.
Rev Inst Med Trop Sao Paulo. 1990 Nov-Dec;32(6):443-9.
This study investigates the housing conditions and deforesting in Caconde and São José do Rio Pardo, neighbouring towns located in the northeastern region of the State of São Paulo, Brazil. These localities have had different dwelling infestation rates by Panstrongylus megistus and they also show distinct socioeconomic development. The housing conditions were studied by the analysis of data collected during the 1970's by the Superintendência de Controle de Endemias (SUCEN), a government agency. Aerial photographs taken during flights performed by the Agricultural Department of the State were used to analyse the deforesting. The socioeconomic analysis was based on Agricultural Census and interview with agronomic officials. The study showed more precarious housing conditions in Caconde than in São José do Rio Pardo. It was related to lower socioeconomic development in Caconde, confirming a trend showed by previous studies. The deforesting was more intense in São José, where socioeconomic development has been higher and the infestation rates were lower, what demonstrates opposite behaviour between the two determinants in these towns. The links between deforesting and higher socioeconomic development can also be showed by the relation between productive activity and destruction of the natural agricultural covering. It is emphasized that the tendency of opposite effect of the deforesting did not change the final result, that is, the confrontation of these determinant forces resulted in higher infestation rates in Caconde than in São José do Rio Pardo. The existence of these opposite trends between the determinants disclosed therefore more complexity in the infestation process of P. megistus, although the final result was not reverted changed.
本研究调查了位于巴西圣保罗州东北部的相邻城镇卡孔德和圣若泽杜里奥帕尔杜的住房条件和森林砍伐情况。这些地区感染巨蝽的房屋感染率不同，社会经济发展也呈现出明显差异。住房条件通过对政府机构地方病控制局（SUCEN）在20世纪70年代收集的数据进行分析来研究。利用该州农业部门飞行期间拍摄的航空照片来分析森林砍伐情况。社会经济分析基于农业普查以及与农艺官员的访谈。研究表明，卡孔德的住房条件比圣若泽杜里奥帕尔杜的更不稳定。这与卡孔德较低的社会经济发展水平有关，证实了先前研究显示的一种趋势。圣若泽的森林砍伐更为严重，那里社会经济发展水平较高且感染率较低，这表明这两个城镇的这两个决定因素呈现出相反的行为。生产活动与天然农业覆盖物破坏之间的关系也表明了森林砍伐与较高社会经济发展之间的联系。需要强调的是，森林砍伐产生相反影响的趋势并没有改变最终结果，即这些决定因素相互作用导致卡孔德的感染率高于圣若泽杜里奥帕尔杜。因此，这些决定因素之间存在的相反趋势揭示了巨蝽感染过程中存在更多复杂性，尽管最终结果并未改变。
