4. joint action to assist the public health service public health staff to help foreign service officer, Ministry of health, both passive and aggressive and patient.
4. Co-operation assistance to the public health service workers. The foreign health workers Health Officer Both proactive and reactive services. And Referral
4. Joint action to help the public health services to the alien. With foreign public health worker health service both proactive and reactive, and การส่งต่อ patients.