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最近,美国政府宣布,拟对2岁以下儿童免费提供免疫接种,许多疫苗制造商迅即表示反对。根据该项计划,政府每年将花费10亿美元购买国家所需疫苗,并将疫苗分发至州和联邦卫生诊所。政府还要向私人医师免费提供疫苗,但仅允许他们收取疫苗接种费。该项计划亦要求开发一种计算机追踪系统,以保存每一名儿童免疫接种史记录。目前,美国仅60%左右2岁儿童获得完全免疫,在某些内地城市地区,免疫接
Recently, the U.S. government announced that it intends to offer immunization free of charge to children under 2 years of age, and many vaccine manufacturers immediately expressed their opposition. Under the plan, the government spends up to $ 1 billion a year to buy the vaccine the country needs and distribute the vaccine to state and federal health clinics. The government will also provide private physicians with free vaccines, but only allow them to charge for vaccinations. The plan also calls for the development of a computerized tracking system to keep a record of every childhood immunization. At present, only about 60% of children aged 2 in the United States are fully immunized. In some urban areas in the Mainland, immunization