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Communicable Disease Information System
Communicable Disease
Information System

The Communicable Disease Information System (CDIS) is an information system aimed at enhancing the capability of Hong Kong in the surveillance and control of communicable diseases through application of information science and the information technology.

In this website, using designated login ID and password, CDIS users can access CENO On-line, which is a secure and convenient web-based notification system under the CDIS.
Available to registered medical practitioners practising in Hong Kong*. Login ID and password are required for access.

2477 2770
Notification forms can be downloaded from the CHP website.

2477 2772
CENO operates from 9 a.m. to 6 p.m. on Monday, and 9 a.m. to 5:45 p.m. from Tuesday to Friday. After office hours or on public holidays, any urgent notification should be made to the Medical Control Officer.

CENO provides an option for notification using email which can be digitally signed and encrypted. Message content should include the sender's name and contact telephone number, and the patient's clinical and contact information.

Central Notification Office, 3/F., 147C Argyle Street, Kowloon.
The above channels are preferable to mail, as the latter takes considerably longer time to reach CENO.

NB *Refer to registered medical practitioners appearing in the "Full registration (Resident List)" or "Limited Registration" list under the "List of Registered Doctors" published by the Medical Council of Hong Kong. The accounts of medical practitioners who are not in the fore-mentioned lists will be inactivated.

Last modified: 2017/03/06
CENO On-line CENO Online
Central Notification Office (CENO) has been set up under the Centre for Health Protection (CHP) to centralize communicable diseases notifications and monitoring in Hong Kong. CENO On-line is literally CENO on the internet. In this website, using designated login ID and password, registered medical practitioners can access the secure and convenient web-based notification system to report cases online.
(a) Statutory notifiable diseases
(b) Other communicable diseases of topical public health concern
(c) Poisoning related to heavy metal or traditional Chinese medicine
(d) Suspected institutional outbreaks
(e) Unusual clustering of communicable diseases

NB Anonymous HIV/AIDS reporting is handled by Special Preventive Programme, Public Health Services Branch, Centre for Health Protection. Please click here for details.
Last modified: 2017/03/06