A/RES/63/241 23. Urges Member States to implement strategies for the realization of the right to education as an integral element in the context of humanitarian assistance, with the support of the international community, the United Nations system, donors, multilateral agencies, the private sector, civil society and non-governmental organizations; Right to the enjoyment of the highest attainable standard of health 24. Calls upon States: (a) To take all necessary measures to ensure the right of the child to the enjoyment of the highest attainable standard of health and to develop sustainable health systems and social services, ensuring access to such systems and services without discrimination, paying special attention to adequate food and nutrition and combating disease and malnutrition, to access to safe drinking water and sanitation, to the special needs of male and female adolescents and to reproductive and sexual health, and securing appropriate prenatal and post-natal care for mothers, including measures to prevent mother-to-child transmission of HIV, and in this context to realize the millennium development goals aimed at reducing child mortality, improving maternal health and combating HIV/AIDS, malaria and other diseases; (b) To assign priority to developing and implementing activities and programmes aimed at treating and preventing addictions, in particular addiction to alcohol and tobacco, and the abuse of narcotic drugs, psychotropic substances and inhalants; (c) To support adolescents to be able to deal positively and responsibly with their sexuality in order to protect themselves from HIV/AIDS infection and to implement measures to increase their capacity to protect themselves from HIV/AIDS through, inter alia, the provision of health care, including for sexual and reproductive health, and through preventive education that promotes gender equality; (d) To develop and implement strategies, policies and programmes that identify and address those factors that make individuals particularly vulnerable to HIV infection in order to complement prevention programmes that address activities that place individuals at risk for HIV infection, such as risky and unsafe behaviour and injecting drug use; (e) To promote initiatives aimed at reducing the prices of antiretroviral drugs, especially second-line drugs, available to boys and girls, including bilateral and private sector initiatives, as well as initiatives on a voluntary basis taken by groups of States, including those based on innovative financing mechanisms that contribute to the mobilization of resources for social development, especially those that aim to provide further access to drugs at affordable prices to children in developing countries on a sustainable and predictable basis, and in this regard takes note of the International Drug Purchase Facility, UNITAID; (f) To design and implement programmes to provide social services and support to pregnant adolescents and adolescent mothers, in particular by enabling them and also the adolescent fathers to continue and complete their education; Right to food 25. Expresses grave concern at the worsening of the world food crisis, which seriously undermines the realization of the right to food for all, including mothers and children, and also expresses grave concern that this crisis threatens to further 7