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The occurrence of SARS in March 2003 has resulted in an increased interest, worldwide in emerging infectious diseases. The SARS experience provided us a lesson on the importance of promoting hygienic practices among individuals and different working sectors. In Hong Kong, a voluntary organization called the UNITE proposed a Hygiene Charter which aimed at taking hygiene to new levels. This action has been supported by individuals and different sectors including the Personal and Family, Management, Buildings, Catering, Education, Finance and Commercial, Industrial, Medical and Health, Public Transportation, Social Welfare, Sports and Culture and Tourism. As promotion and maintenance of environmental health requires input from different sectors, the signing of the Hygiene Charter provides an opportunity for individuals and the public to show their pledge and commitment to good hygiene practices. As a result, with environment improvement and good infectious disease control measures, prevention of epidemics of infectious diseases is deemed to be possible.

A needs assessment is recommended to be carried out before planning resource allocation in a community as it could help to identify the needs of the people. This study illustrated the importance of needs assessment in planning health promoting school initiatives by comparing the results of youth risk behaviours surveys conducted at two districts of Hong Kong, namely Tsuen Wan and North District. The findings indicated that the two districts should prioritize their resources in respect to their urgent needs. A higher proportion of students from Tsuen Wan participated in vigorous exercise regularly in comparison to students from North District. Students from North District consumed more vegetable per week and exhibited less depressive symptoms than students from Tsuen Wan. The availability of data on youth risk behaviours of the two districts would provide information for strategic planning and direct decision-making in youth health programmes.