Ciesielski S D, Seed J R, Ortiz J C, Metts J
Department of Parasitology and Laboratory Practice, School of Public Health, University of North Carolina, Chapel Hill 27599.
Am J Public Health. 1992 Sep;82(9):1258-62. doi: 10.2105/ajph.82.9.1258.
The public health significance of intestinal parasitism among migrant farmworkers has been poorly defined. We report a three-part study in which we attempted to provide population-based estimates and identify risk factors for infection.
Parasite prevalence and incidence were estimated from two cross-sectional studies and a longitudinal study. We used questionnaires and clinical measurements such as hematocrits to examine risk factors and health effects.
In the 1987 convenience sample (n = 265), parasite prevalence ranged from 28% among the US born to 86% among the Central American born, with no significant difference between the prevalence of pathogens among US-born (14%) and Mexican-born (24%) subjects (P = .12, chi 2 test). High prevalences were also found in the 1988 random sample. An annual incidence of 9.5% (n = 74) was demonstrated in 1988. Symptoms such as abdominal pain were associated with infection, and lower hematocrits were associated with hookworm infection (P = .02, t test).
Infection with intestinal parasites appears to be an occupational hazard of farmwork, necessitating improved working and living conditions and greater clinical awareness.
农民工肠道寄生虫感染对公共卫生的影响一直未得到明确界定。我们开展了一项分为三个部分的研究，旨在提供基于人群的感染率估计并确定感染的风险因素。
通过两项横断面研究和一项纵向研究估计寄生虫感染率和发病率。我们使用问卷和血细胞比容等临床测量指标来检查风险因素和健康影响。
在1987年的便利样本（n = 265）中，寄生虫感染率在美国出生者中为28%，在中美洲出生者中为86%，在美国出生者（14%）和墨西哥出生者（24%）中病原体感染率无显著差异（P = 0.12，卡方检验）。在1988年的随机样本中也发现了高感染率。1988年显示年发病率为9.5%（n = 74）。腹痛等症状与感染有关，较低的血细胞比容与钩虫感染有关（P = 0.02，t检验）。
肠道寄生虫感染似乎是农业劳动的一种职业危害，需要改善工作和生活条件，并提高临床意识。
