“…In various Asian countries (Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Nepal, Philippines, Thailand, Turkey, Saudi Arabia, and Vietnam), North America (Cuba, Mexico, and Nicaragua), South America (Argentina, Brazil, Colombia, and Peru), and Africa (northern Africa, west Africa, and South Africa), most of the studies focused on children, and infection rates for G. duodenalis fell into the range of 8% to 30% in the majority of those studies (12,29,56,62,63,65,69,144,160,166,174,184,186,202,203,229,234,237,239,252,253,281). In a few studies, the infection rate was lower than 4% or higher than 30% (65,137,145,230,243,274,280). High infection rates for giardiasis were also reported for adults in developing countries, with rates of 25.1% in pregnant women in Minatitlan, Mexico (224); 11.7% in adults in Settat, Morocco (72); and 5.0 to 14.0% in African refugees and new immigrants in the United States, the Netherlands, and Spain (167).…”