CRC/C/SRB/CO/1 page 17 and protection for 27 Roma children. However, the Committee is concerned that these children are especially vulnerable to trafficking and economic and sexual exploitation. 70. The Committee encourages the State party to continue its efforts in cooperation with relevant NGOs to fulfil the rights and needs of street children, to address the root causes and develop effective strategies to increase awareness of the rights of street children. Furthermore, the Committee urges the State party to provide protection and assistance to children currently living on the streets taking into account the views of these children. The State party is further urged to elaborate and implement programmes to prevent children from leaving families and schools for the street. Sexual exploitation and trafficking 71. The Committee welcomes the ratification of the Optional Protocol to the Convention on the Rights of the Child on the sale of children, child pornography and child prostitution as well as the establishment of a National Team for the Prevention and Suppression of Trafficking of Human Beings. However, the Committee is concerned at the lack of data and the lack of a comprehensive national strategy to prevent trafficking and sexual exploitation of children. The Committee is furthermore concerned at the lack of reintegration and rehabilitation programmes and services exclusively for child victims and at reports of sexual abuse by law enforcement officials. 72. The Committee recommends that the State party: (a) Strengthen its efforts to reduce and prevent the occurrence of sexual exploitation, sale of children and trafficking, through, inter alia, undertaking a comprehensive study and data collection of the occurrence and the dimension of the problem and implement comprehensive strategies and policies; (b) Strengthen cooperation with the authorities of countries from or to which children are trafficked in order to combat the phenomenon; (c) Continue to sensitize professionals, parents, children and the general public to the problems of sexual abuse of children and trafficking through education, including media campaigns; (d) Develop a comprehensive national strategy to prevent trafficking and sexual exploitation of children; (e) Increase protection provided to sexually exploited and trafficked children, who should be treated as victims and not criminalized. The Committee recommends that this take place including through prevention, witness protection, social reintegration, access to health care and psychological assistance in a coordinated manner, including by enhancing cooperation with NGOs. In this respect, account should be taken of the Declaration and Agenda for Action and the Yokohama Global Commitment adopted at the First and Second World Congresses against Commercial Sexual Exploitation of Children, held in 1996 and 2001 respectively; (f) Ensure that a confidential, accessible and child-sensitive mechanism is established to receive and effectively address individual complaints of all children,