Seasonal and Circadian Fluctuations of Human Intestinal Parasites in El-Dakahlia Governorate, Egypt
Sallam, A., Soliman, M., Helal, K., Ahmad, S. (2012). Seasonal and Circadian Fluctuations of Human Intestinal Parasites in El-Dakahlia Governorate, Egypt. EKB Journal Management System, 7(1), 9-16.
Alaa El-Din Sallam; Maha Soliman; Khairi Helal; Sabry Ahmad. "Seasonal and Circadian Fluctuations of Human Intestinal Parasites in El-Dakahlia Governorate, Egypt". EKB Journal Management System, 7, 1, 2012, 9-16.
Sallam, A., Soliman, M., Helal, K., Ahmad, S. (2012). 'Seasonal and Circadian Fluctuations of Human Intestinal Parasites in El-Dakahlia Governorate, Egypt', EKB Journal Management System, 7(1), pp. 9-16.
Sallam, A., Soliman, M., Helal, K., Ahmad, S. Seasonal and Circadian Fluctuations of Human Intestinal Parasites in El-Dakahlia Governorate, Egypt. EKB Journal Management System, 2012; 7(1): 9-16.

Seasonal and Circadian Fluctuations of Human Intestinal Parasites in El-Dakahlia Governorate, Egypt

Catrina: The International Journal of Environmental Sciences
Article 2, Volume 7, Issue 1, 2012, Page 9-16  XML PDF (641.86 K)
Document Type: Original Article
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Authors
Alaa El-Din Sallam email 1; Maha Soliman1; Khairi Helal1; Sabry Ahmad2
1Zoology Dept., Faculty of Science, Suez Canal University, Ismailia, Egypt
2Zoology Dept., Faculty of Science, Zagazig University, Zagazig, Egypt
Abstract
The present study aims to monitor the incidence of human intestinal parasites and their seasonal
fluctuations in El-Dakahlia governorate. Human fecal specimens from 428 patients visiting Meet-
Ghamr general hospital were monthly collected during different sampling circadian time: morning,
afternoon and evening, throughout the period from 2007 to 2009. Microscopic examination was
performed using both direct smear and formalin-ether sedimentation techniques. Anti-Schistosoma
specific antibodies in sera of 279 patients were examined using indirect haemagglutination test.
The results demonstrated that the overall prevalence of eight identified intestinal parasites reached, in
a descending order,Entamoebahistolytica (52.34%), Schistosomamansoni (37.63%),
Ascarislumbricoides (26.86%), Hymenolepis nana (16.35%), Giardia lamblia (5.14%),
Enterobiusvermicularis (3.73%), Trichuristrichiura (0.46%), and Trichomonashominis (0.23%).
Highest prevalence was recorded for E. histolytica(87.80%) and G. lamblia (14.63%) during summer,
whereas for S. mansoni(73.08%) andA. lumbricoides (36.62%) during autumn, and for H.nana
(22.07%) during winter. Highest incidence was observed in the morning samples for
S.mansoni(38.27%). Meanwhile, evening samples demonstrated highest incidence for E. histolytica
(75.41%) and A. lumbricoides(36.07%). A marked sex-related difference regarding the infection
prevalence was found. Moreover, most of the parasitic infections were the highest in age <=10
years.In conclusion, sampling at a definite circadian time and in a proper month will precisely
indicate the parasite prevalence rate. This will consequently optimize monitoring and controlling of
the parasite community.
Keywords
seasonal; circadian; Intestinal parasites; prevalence; El-Dakahlia governorate
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