Iranian Journal of Parasitology 2017. 12(1):136-142.

Detection of Toxocara spp. Eggs in the Soil of Public Places in and Around of Ardabil City, Northwestern Iran


Background: Human toxocariasis is contained in the list of neglected diseases. The infection occurs after ingestion of embryonated eggs in contaminated soil. The present study was carried out to estimate the extent of soil contamination with Toxocara spp. eggs in the public places.

Methods: Soil samples were collected randomly from 41 public places in various parts in and around of Ardabil, Iran, between March 2013 and March 2014. Data were examined by microscopy following sodium nitrate flotation.

Results: Of the 200 collected soil samples, 35 (17.5%) were positive for soil parasites. The eggs of Toxocara spp. were found in 14 (7%) soil samples.

Conclusion: This investigation gives baseline knowledge regarding soil contamination with Toxocara spp. eggs in Ardabil city and provides information for local control of toxocariasis.  


Toxocara spp; Eggs; Soil; Public places; Iran

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Thomas D, Jeyathilakan N. Detection of Toxocara eggs in contaminated soil from various public places of Chennai city and detailed correlation with literature. J Parasit Dis. 2014; 38 (2): 174-80.

Despommier D. Toxocariasis: Clinical aspects, epidemiology, medical ecology, and molecular aspects. Clin Microbiol Rev. 2003; 16 (2): 265-72.

Lee AC, Schantz PM, Kazacos KR, Montgomery SP, Bowman DD. Epidemiologic and zoonotic aspects of ascarid infections in dogs and cats. Trends Parasitol. 2010; 26 (4): 155-61.

Sadjjadi SM, Khosravi M, Mehrabani D, Orya A. Seroprevalence of Toxocara infection in school children in Shiraz, southern Iran. J Trop Pediatr. 2000; 46 (6): 327-30.

Harbinder S, Bali HS, Arvinder K. Prevalence of Toxocara spp. Eggs in the soil of public and private places in Ludhiana and Kellon area of Punjab, India. Epidemiol Sante Anim. 1997: 31-2.

Zibaei M, Abdollahpour F, Birjandi M, Firoozeh F. Soil contamination with Toxocara spp. Eggs in the public parks from three areas of Khorramabad, Iran. Nepal Med Coll J. 2010; 12 (2): 63-5.

Traversa D, Frangipane di Regalbono A, Di Cesare A, La Torre F, Drake J, Pietrobelli M. Environmental contamination by canine geohelminths. Parasit Vectors. 2014; 7: 67.

Pezeshki A, Rezaeian M, Zarebavani M. Toxocara cati infection in cats in Tehran and their importance in medicine. Sci J Anim Sci. 2013; 2 (7): 195-8.

Tavassoli M, Hadian M, Charesaz S, Javadi S. Toxocara spp. Eggs in public parks of Urmia city, west Azerbaijan Province Iran. Iran J Parasitol. 2008; 3 (3): 24-29.

Azian MY, Sakhone L, Hakim SL, Yusri MY, Nurulsyamzawaty Y, Zuhaizam AH, Rodi IM, Maslawaty MN. Detection of helminth infections in dogs and soil contamination in rural and urban areas. Southeast Asian J Trop Med Public Health. 2008; 39 (2): 205-12.

Khademvatan S, Abdizadeh R, Tavalla M. Molecular characterization of Toxocara spp. from soil of public areas in Ahvaz southwestern Iran. Acta Trop. 2014; 135: 50-4.

Abdi J, Darabi M, Sayehmiri K. Epidemiological situation of toxocariasis in Iran: Meta-analysis and systematic review. Pak J Biol Sci. 2012; 15 (22): 1052-5.

Maraghi S, Mazhab Jafari K, Sadjjadi SM, Latifi SM, Zibaei M. Study on the contamination of Abadan public parks soil with Toxocara spp. Eggs. J Environ Health Sci Eng. 2014; 12: 86.

Uga S, Matsumura T, Aoki N, Kataoka N. Prevalence of Toxocara species eggs in the sandpits of public parks in Hyogo prefecture, Japan. Kiseichugaku Zasshi. 1989; 38 (5): 280-4.

Mizgajska-Wiktor H. Recommended method for recovery of Toxocara and other geohelminth eggs from soil. Wiad Parazytol. 2005; 51 (1): 21-2.

Nourian AA, Amiri M, Ataeian A, Haniloo A, Mosavinasab SN, Badali H. Seroepidemiolo-gical study for toxocariasis among children in Zanjan-northwest of Iran. Pak J Biol Sci. 2008; 11 (14): 1844-7.

Eslami A. Veterinary helminthology. Iran: University of Tehran Press; 1997.

Fallah M, Azimi A, Taherkhani H. Seroprevalence of toxocariasis in children aged 1-9 years in western Islamic Republic of Iran, 2003. East Mediterr Health J. 2007; 13 (5): 1073-7.

Jamshidi Sh, Meshki B, Toghani M. A study of helminthic infection of gastrointestinal tract in stray cats at urban, areas in Isfahan. J Fac Vet Med Unvi Tehran. 2002; 57 (2): 25-7. [In Persian]

Meshgi B, Jamshidi Sh, Saadati D, Hooshyar H, Bokaie S. An overview of Toxocara cati infection in stray cats in the metropolitan region of Tehran, Iran, and a comparison of two diagnostic methods. Int J Vet Res. 2010; 4 (1): 53-56.

Gillespie SH, Pereira M, Ramsay A. The prevalence of Toxocara canis ova in soil samples from parks and gardens in the London area. Public Health. 1991; 105 (4): 335-9.

Holland C, O'connor P, Taylor MR, Hughes G, Anthony Girdwood RW, Smith H. Families, parks, gardens and toxocariasis. Scand J Infect Dis. 1991; 23 (2): 225-31.

Jansen J, Van Knapen F, Schreurs M, Van Wijngaarden T. Toxocara ova in parks and sand-boxes in the city of Utrecht. Tijdschr Diergeneeskd. 1993; 118 (19): 611-4. [In Dutch]

Kumar BV, Hafeez M. A study on the prevalence of Toxocora spp eggs at public places in Andhra pradesh. J Commun Dis. 1998; 30 (3): 197-8.

Maśnik E. Relationships between the prevalence of Toxocara eggs in dogs' faeces and soil. Wiad Parazytol. 2000; 46 (2): 239-44.

Singh LA, Das SC, Baruah I. Observations on the soil contamination with the zoonotic canine gastrointestinal parasites in selected rural areas of Tezpur, Assam, India. J Parasit Dis. 2004; 28 (2): 121-3.

Motazedian H, Mehrabani D, Tabatabaee SH, Pakniat A, Tavalali M. Prevalence of helminth ova in soil samples from public places in Shiraz. East Mediterr Health J. 2006; 12 (5): 562-5.

Paquet-Durand I, Hernández J, Dolz G, Zuniga JJ, Schnieder T, Epe C. Prevalence of Toxocara spp., toxascaris leonina and ancylostomidae in public parks and beaches in different climate zones of Costa rica. Acta Trop. 2007; 104 (1): 30-7.

Saraei M, Zakilo M, Tavazoei Y, Jahanihashemi H, Shahnazi M. Contamination of soil and grass to Toxocara spp. Eggs in public parks of Gazvin, Iran. Asian Pac J Trop Biomed. 2012; 2 (2):1156-58.

Santarém VA, Franco Eda C, Kozuki FT, Fini D, Prestes-Carneiro LE. Environmental contamination by Toxocara spp. Eggs in a rural settlement in Brazil. Rev Inst Med Trop Sao Paulo. 2008;50 (5): 279-81.

Jarosz W, Mizgajska-Wiktor H, Kirwan P, Konarski J, Rychlicki W, Wawrzyniak G. Developmental age, physical fitness and Toxocara seroprevalence amongst lower-secondary students living in rural areas contaminated with Toxocara eggs. Parasitology. 2010;137 (1): 53-63.

Avcioglu H, Balkaya I. The relationship of public park accessibility to dogs to the presence of Toxocara species ova in the soil. Vector Borne Zoonotic Dis. 2011; 11 (2): 177-80.

Khazan H, Khazaei M, Tabaee SS, Mehrabi A. Prevalence of Toxocara spp. Eggs in public parks in Tehran city, Iran. Iran J Parasitol. 2012; 7 (3): 38-42.

Tavalla M, Oormazdi H, Akhlaghi L, Razmjou E, Lakeh MM, Shojaee S, Hadighi R, Meamar AR. Prevalence of parasites in soil samples in Tehran public places. Afr J Biotechnol. 2012; 11 (20): 4575-78.

Sudhakar NR, Samanta S, Sahu S, Raina OK, Gupta SC, Madhu DN, Kumar A. Prevalence of Toxocara species eggs in soil samples of public health importance in and around bareilly, Uttar pradesh, India. Vet World. 2013; 6 (2): 87-90.

Berenji F, Movahedi Rudy AG, Fata A, Tavassoli M, Mousavi Bazaz M, Salehi Sangani G. Soil contamination with Toxocara spp. Eggs in public parks of Mashhad and Khaf, northeast of Iran. Iran J Parasitol. 2015;10 (2): 286-9.

Ghashghaei O, Khedri J, Jahangiri-nasr F, Hashemi SH, Nourollahi Fard SR. Contamination of soil samples of public parks with Toxocara spp. Eggs in Kermanshah, Iran. J Fac Vet Med Istanbul Univ. 2016;42 (1): 47-50.

Ruiz de Ybáñez MR, Garijo MM, Alonso FD. Prevalence and viability of eggs of Toxocara spp. And Toxascaris leonina in public parks in eastern spain. J Helminthol. 2001; 75 (2): 169-73.

Carden SM, Meusemann R, Walker J, Stawell RJ, MacKinnon JR, Smith D, Stawell AM, Hall AJ. Toxocara canis: Egg presence in Melbourne parks and disease incidence in Victoria. Clin Exp Ophthalmol. 2003; 31 (2): 143-6.

Das SS, Kumar D, Sreekrishnan R, Ganesan R. Soil contamination of public places, play grounds and residential areas with ova of Toxocara. Indian J Vet Res. 2009;18 (2):13-6.

Sprenger LK, Green KT, Molento MB. Geohelminth contamination of public areas and epidemiological risk factors in Curitiba, Brazil. Rev Bras Parasitol Vet. 2014; 23 (1): 69-73.


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