CRC/C/GC/9 Page 15 52. It is important to emphasize that health services should be provided within the same public health system that provides for children with no disabilities, free of charge, whenever possible, and as updated and modernized as possible. The importance of community-based assistance and rehabilitation strategies should be emphasized when providing health services for children with disabilities. States parties must ensure that health professionals working with children with disabilities are trained to the highest possible standard and practice based on a child-centred approach. In this respect, many States parties would greatly benefit from international cooperation with international organizations as well as other States parties. B. Prevention 53. Causes of disabilities are multiple and, therefore, the quality and level of prevention vary. Inherited diseases that often cause disabilities can be prevented in some societies that practice consanguineous marriages and under such circumstances public awareness and appropriate pre-conception testing would be recommended. Communicable diseases are still the cause of many disabilities around the world and immunization programmes need to be stepped up aiming to achieve universal immunization against all preventable communicable diseases. Poor nutrition has a long-term impact upon children’s development and it can lead to disabilities, such as blindness caused by Vitamin A deficiency. The Committee recommends that States parties introduce and strengthen prenatal care for children and ensure adequate quality of the assistance given during the delivery. It also recommends that States parties provide adequate post-natal health-care services and develop campaigns to inform parents and others caring for the child about basic child healthcare and nutrition. In this regard, the Committee also recommends that the States parties continue to cooperate and seek technical assistance with, among others, WHO and UNICEF. 54. Domestic and road traffic accidents are a major cause of disability in some countries and policies of prevention need to be established and implemented such as the laws on seat belts and traffic safety. Lifestyle issues, such as alcohol and drug abuse during pregnancy, are also preventable causes of disabilities and in some countries the fetal alcohol syndrome presents a major cause for concern. Public education, identification and support for pregnant mothers who may be abusing such substances are just some of the measures that may be taken to prevent such causes of disability among children. Hazardous environment toxins also contribute to the causes of many disabilities. Toxins, such as lead, mercury, asbestos, etc., are commonly found in most countries. Countries should establish and implement policies to prevent dumping of hazardous materials and other means of polluting the environment. Furthermore, strict guidelines and safeguards should also be established to prevent radiation accidents. 55. Armed conflicts and their aftermath, including availability and accessibility of small arms and light weapons, are also major causes of disabilities. States parties are obliged to take all necessary measures to protect children from the detrimental effects of war and armed violence and to ensure that children affected by armed conflict have access to adequate health and social services, including psychosocial recovery and social reintegration. In particular, the Committee stresses the importance of educating children, parents and the public at large about the dangers of landmines and unexploded ordnance in order to prevent injury and death. It is crucial that States parties continue to locate landmines and unexploded ordnance, take measures to keep children away from suspected areas, and strengthen their mine clearance activities and, when appropriate, seek the necessary technical and financial support within a framework of international cooperation, including from United Nations agencies.