A/HRC/19/64 expected to better equip actors to prevent violence, and help child victims overcome the impact of this phenomenon. 33. In both surveys, one outcome was the identification of new knowledge gaps, generating commitment to promote complementary research: in the case of Tanzania to address the situation of particularly vulnerable groups of children, who had not been included in the initial survey; in the case of the United States, to assess the long-term effects of violence on children‘s and adults‘ health and well-being. 34. The findings of the Tanzanian survey have paved the way to an implementation phase, initiated with the Government‘s launch of a coordinated response to address the concerns revealed by the survey. Important efforts are being made to raise awareness and mobilize public support to overcome social acceptance of this phenomenon and social pressure inhibiting child victims from reporting. 35. In a significant number of other countries there are encouraging steps towards conducting similar comprehensive national surveys on violence against children. III. Strategic initiatives promoted in support of violence prevention and elimination A. Moving towards the universal ratification of the Optional Protocols to the Convention on the Rights of the Child 36. The global campaign for the universal ratification of the Optional Protocols, launched in 2010 with the Secretary-General, provides a sound agenda for consolidating the institutional partnership with strategic allies within the United Nations system, including the Special Representative for Children and Armed Conflict, the United Nations Children‘s Fund (UNICEF), OHCHR, the Committee on the Rights of the Child and the Special Rapporteur on the sale of children, child prostitution and child pornography. The campaign also resulted in collaboration with ILO and the United Nations Office on Drugs and Crime (UNODC). 37. In the light of her mandate, the Special Representative places a special focus on achieving global adherence to the Optional Protocol on the sale of children, child prostitution and child pornography. She pursues this agenda through global advocacy, regional engagement and field missions. 38. Significant progress has been made. The goal of universal ratification was incorporated in the United Nations policy agenda, including the Global Plan of Action to Combat Trafficking in Persons7 and the Roadmap adopted by The Hague Global Child Labour Conference.8 Commitment to ratification and implementation of the Protocol was also expressed by regional organizations and political groupings, including the Organization of Islamic Cooperation, the League of Arab States, MERCOSUR, the South Asian Initiative to End Violence against Children and States from the Asia and Pacific region. The Council of Europe launched a wide information campaign against sexual violence of children within which the ratification of the Optional Protocol is a core component. 7 8 Adopted by General Assembly resolution 64/293; see in particular paragraph 4 of the Global Plan of Action. Roadmap for Achieving the Elimination of the Worst Forms of Child Labour by 2016, adopted on 11 May 2010. 9