“…This agreed with Elkhtam et al (2016) reported 6.09% in Menofia Governorate, as well as abroad in Brazil, (Almeida et al, 2002), Vietnam (Van De et al, 2014 in 23 European countries (Laranjo-González et al, 2016), and in Ethiopia (Engdaw et al, 2015;Wondimagegnei and Belete, 2015;Jemal and Kebede, 2016), however, Dada (1980) reported 0.9% in Sudan. These data were higher than that 2.16% in Zimbabwe (Pugh and chambers, 1989;Phiri, 2006) in Zambia and by Abu-Elwafa andAl-Araby (2008), Basem et al (2009) in Egypt, Ofukwu et al (2009), Rabi'u and Jegede (2010), Ngwu et al (2004) in Nigeria, Kozłowska-Łój (2012) in Poland, Dupuy et al (2014) in France, Dorny et al (2009) in Belgium and Rossi et al (2016) in Brazil. On the contrary, the present data was lower than (20%), reported by Abdel-Hafeez et al (2015) in Egypt, Mosienyane (1986) in Botswana, Kebede (2008), andAbunna et al (2008) in Ethio-pia.…”