Hajar Ziaei - Associate Professor, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
Fatemeh Sayyahi - Medical Student, Research Committee, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
Mahboobeh Hoseiny - MSC Statistic, GIS Research Center, Mazandaran University of Medical Sciences, Sari, Iran
Mohammad Vahedi - MSC Microbiology, Faculty Member, Department of Microbiology, Mazandaran University of Medical Sciences, Sari, Iran

Background: Ascariasis and trichuriasis are the most common intestinal geohelminthic diseases, and as such they are significant in terms of clinical and public health. This study was done to determineprevalence, status and geographic distribution patterns for Ascariasis and Trichuriasis. The study wasdone in the period 1991-2014 in northern Iran using Aregis 9.2 software. Methods: This was a review study, using description and analysis, of geographical distribution of Ascarisand Trichuris relating to townships in Mazandran province, northern Iran, covering a 23-year period. Data were collected from a review of the relevant literature, summarized and classified using Arc GIS,9.2 to design maps and tables. Results: Based on results presented in tables and maps, means for prevalence of Ascaris and Trichuriswere divided into five groups. The maximum prevalence rate of Ascaris was 16.3% reported in rural areas of Tonkabon in 1981-1982. Prevalence means for Ascaris in the central and western areas ofMazandaran province were 2%-4% and 4%, respectively. The maximum prevalence of Trichuris in therural area of Tonkabon was 22.5% and the lowest 0.06% was among the cattle breeder’s in rural areas of the province at in 2002-2003. Conclusion: Data presented in this study provides information useful to health care workers researchers and health administrators, especially for physicians, clinicians and for future research. Also, it isnecessary to control and prevent geohelminthic parasitic infections, particularly in rural areas by public education for families, health authorities and health care systems

Geohelminths, Ascariasis, Trichuriasis, Geographical distribution