4.      Further Information

4.1    If you have any questions about this supplement, please contact the Centre for Health Protection,

         Department of Health. 

Tel        : 2768 9767

Fax      : 2711 4847

Email    : env_hyg@dh.gov.hk

Website : http://www.chp.gov.hk

Acknowledgement

We thank the Education and Manpower Bureau, the Social Welfare Department, the Electrical and Mechanical Services Department, and the Environmental Protection Department for their advice on the preparation of this supplement.