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World Down Syndrome Day is on March the 21st every year. It is on this day because the number 21 is important in the identification of Down Syndrome. The condition is created by a 21st, extra chromosome being replicated three times, thus causing the condition. The day is organized by Down Syndrome International (DSI), which runs different annual campaigns. DSI aims to create global awareness about Down Syndrome and encourage countries to help sufferers play a bigger role in their societies. DSI says sufferers are able to make significant contributions to society. Down Syndrome is common throughout the world. Estimates are that the incidence of the condition is over 1 per 1,000 births.
每年的3月21日为世界唐氏综合症日。选择该日期的原因对辨别唐氏综合症至关重要。该疾病是由于人体的第21对染色体的三体变异所造成的。该节日率先由唐氏综合症国际组织发起，该组织每年都会举办活动。它的目的是为了唤起全球对唐氏综合症的认识，并鼓励各个国家让病患在社会上发挥更大的作用。该组织称病患能够为社会做出杰出贡献。在全球，唐氏综合症非常普遍。有预测称，该疾病的患病率超过了千分之一。
Down Syndrome is a disorder of the chromosomes. Most people have 20 chromosomes, but the presence of an extra 21st chromosome creates the disorder. It is named after the British doctor, John Langdon Down, who first described the syndrome in 1866. Sufferers experience a limitation in their cognitive ability and physical growth, as well as changes in their facial appearance. People with Down Syndrome range from having slight developmental disabilities to very serious mental disability. Down Syndrome also increases the risk of heart defects, kidney disease and insomnia. Nowadays, loving care and good education can provide sufferers with a good quality of life and enable them to make valuable contributions to their fields of work.
唐氏综合症是染色体疾病。绝大多数人拥有20对染色体，然而多出的另一对染色体会导致该疾病的产生。该疾病是以英国医生唐·约翰·朗顿的名字命名的，1866年，他首先对这一病症进行了描述。病患的认知能力、身体发育以及面容都会受到限制。患有唐氏综合症的患者，有的发育迟缓，有的严重智障。该疾病还会增加患心脏缺陷、肾疾病以及失眠的风险。如今，关爱和教育能够为病患提供优质的生活，并帮助他们在自己的领域做出贡献。
译文属可可英语原创，未经允许，不得转载。
