32. 在一些欧洲国家，大批儿童自行离开收容中心或从照顾他们的儿童保护设施或移民机构消失；多达 80%的儿童从收容中心出走，去向不明。在 2016 年 1020 资料来源：负责暴力侵害儿童问题的秘书长特别代表办公室提供给咨询委员会的资料，2017年 2 月 24 日。21 根据《儿童权利公约》第三十七条，不得拘留移民儿童。22 资料来源：无证移民问题国际合作平台。23 资料来源：负责暴力侵害儿童问题的秘书长特别代表办公室提供给咨询委员会的资料，2017年 2 月 24 日。24 资料来源：欧盟统计局。25 儿童基金会，“保护移徙中的儿童：简报文件”(2015 年 11 月，日内瓦)，第 3 页。26 同上，第 4 页。27 资料来源：瑞典移民署。28 儿童基金会，“儿童死亡之旅：地中海中部移民路线”日内瓦，2017 年 2 月)，第 2 页。
32. In some European countries, large numbers of children go missing from reception centres or disappear from the care of child protection facilities or immigration authorities; 20 Source: information provided by the Office of the Special Representative of the Secretary-General on Violence against Children to the Advisory Committee, 24 February 2017. 21 Pursuant to article 37 of the Convention on the Rights of the Child, migrant children should not be detained. 22 Source: the Platform for International Cooperation on Undocumented Migrants. 23 Source: information provided by the Office of the Special Representative of the Secretary-General on Violence against Children to the Advisory Committee, 24 February 2017. 24 Source: Eurostat. 25 UNICEF. Protecting Children on the Move: Briefing Paper (Geneva, November 2015), p. 3. 26 Ibid., p. 4. 27 Source: Swedish Migration Agency. 28 UNICEF, A Deadly Journey for Children: The Central Mediterranean Migration Route (Geneva, February 2017), p. 2.