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Thalassemia is a major public health and economical burden in Lao People's Democratic Republic (Lao PDR). This study is aiming to elaborate the current situation of Thalassemia in Laos. α- and β-thalassemia (α- and β-thal) includes the common Hb S (HBB: c.20A>T) and hemoglobins (Hbs) such as Hb Constant Spring (Hb CS or HBA2: c.427T>C) and Hb E (HBB: c.79G>A) that are prevalent in the country. Overall, the prevalence of α-thal in Lao PDR is 26.8%. There was high prevalence of homozygous (12.8%) and heterozygous (39.7%) Hb E among migrant workers from Lao PDR who crossed the border to work in Thailand. Iron chelation, blood transfusion, prenatal screening and diagnosis, comprehensive treatment are still the major problems. Splenectomy is still performed. A national registry has still not been established. This is a national economic burden for the country. Thalassemia prevention and control strategy should be established and advocated by the government in order to reduce morbidity and premature mortality. [ABSTRACT FROM AUTHOR]