notification of communicable diseases
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Notification of communicable diseases. Prof. MW Gunathunga IIM, 3 rd July 2013. Objectives. To learn what notification entails To learn the process of notification of diseases in Sri Lanka. NOTIFICATION. - PowerPoint PPT PresentationTRANSCRIPT
NOTIFICATION OF COMMUNICABLE DISEASESProf. MW Gunathunga
IIM, 3rd July 2013
Objectives • To learn what notification entails • To learn the process of notification of diseases in Sri
Lanka
NOTIFICATION
•The act of reporting the occurrence of a communicable disease or of an individual affected with such a disease•A legal requirement •On suspicion of disease •Use a standard format (H-544) called notification form•At any setting – government or private
OPD, clinics, wards
Notifiabe Disease Reporting System
Notifiable Disease
A disease that, by statutory requirements, must be reported to the public health authority in the relevant area when the diagnosis is made.
A disease deemed of sufficient public health importance to require that its occurrence be reported to health authorities.
Legislature
• The Quarantine and Prevention of Disease Ordinance of 1897 and it's amendments
- Every practitioner treating a case of notifiable disease should notify
- Anyone failing to do so can be prosecuted in the Magistrate Court
Notifiable Diseases• Group A - Cholera
- Plague- Yellow Fever
To: > DGHS > DDG (Public Health) > Epidemiologist > MOH > Regional epidemiologist
By telephone, fax or telegram and notification form
Notifiable Diseases continued…• Group B
- Acute flaccid Paralysis
- Chicken pox
- Dengue fever / Dengue Haemorrhagic Fever
- Diphtheria
- Dysentery
- Encephalitis
- Enteric fever
- Food Poisoning
- Human Rabies
- Leptospirosis
- Malaria
Notifiable Diseases continued…
• Group B continued… - Measles
- Meningitis - Mumps - Rubella & Congenital Rubella Syndrome- Severe Acute Respiratory Syndrome (SARS)- Simple continued fever for 7 days or more- Tetanus- Neonatal Tetanus- Tuberculosis (Pulmonary)- Typhus fever- Viral Hepatitis- Whooping cough- Leishmaniasis
To Whom ?
AFP – To MOH, Epidemiologist and Regional Epidemiologist By telephone, fax or telegram and AFP notification form
Tuberculosis – To Director NPTCCD by TB notification form
SARS – To DGHS, DDG (PHS), Director (Quarantine), Port/ Air Port Health Officer, Epidemiologist, RE, MOH
Others – To MOH of the area of residence by notification form
When to notify ?• As soon as the provisional diagnosis is made
NOT ON DISCHARGE !!!
Community Ward Notification Register Hospital Notification Register
Notification Register
Investigation and reporting
Infectious DiseasesRegisterUpdate spot map
Patient / BHT in Hospital/GP
Notification Card
MOH
PHI
MOH
Weekly Return of Communicable Diseases
Epidemiology
UnitSpecial Surveillance Forms*
Weekly Epidemiological Report
Quarterly Epidemiological Bulletin
Regional Epidemiologist
What are the diseases under special investigation?
-Diseases covered by the EPI (What are those ?)- Polio, Diphtheria, Pertussis, Tetanus and
Neonatal Tetanus, Measles, Rubella, Hep.B
- Japanese Encephalitis- Dengue Haemorrhagic Fever- Human Rabies- Cholera- Mumps- Meningitis- Chicken pox
Limitations of Notifiable Disease Reporting System
1. Under reporting
2. Poor quality of reporting
- Incomplete
- Illegible
- Inaccurate
3. Lack of timeliness
4. Inconsistency of case definitions
5. Lack of representative ness of reported cases
Lack of Representative ness
E.g. Measles Home - Not reported
GP – May be reported
Govt. Hospital - Reported
Private Hospital - ?
Under reporting - Why ?
1. Lack of knowledge of the need for reporting
- Unaware of the responsibility
- Unaware what diseases to report
- Assume that someone else will report
- Unaware of how to and whom to report
2. Negative attitudes towards reporting
- Time consuming
- Lack of incentive
- Lack of feedback
- Distrust in the govt. / health system
3. Misconceptions
- Reporting compromises patient-physician relationship
- Breaches confidentiality
- Wrong judgment that the disease is not serious
- Belief that public health measures do not work
- Belief that health department does not act on the reports.
Exercise
You are the newly appointed MOH in Maharagama. You notice that although you receive many notifications from the SJGH, you do not receive as many from the other hospitals.
You explore further into the matter. You find that the PHI is unable to locate the house of the patient in most notifications
How would you improve the system ?
Problems - Not notifying- Poor quality notifications
Who ? Govt. Medical Officers esp. Intern MO’sGPsOther medical practitionersPrivate hospitals
How ? -Create awareness and knowledge on proper notification-Address misconceptions-Provide frequent feedback-Show them the benefits
Indoor Morbidity & Mortality Reporting
Coding according
to ICD
Quarterly
BHT
Medical Records Office
Indoor Morbidity
Mortality Register
Indoor Morbidity and Mortality Return
Medical Statistician
Annual Health Bulletin
Limitations of Indoor Morbidity & Mortality Reporting
• Coverage
What exactly do IMMR data represent ?
▪ No. of admissions, not cases
▪ OPD ? Private Hospitals ?
▪ Disability ?
▪ Mortality – only hospital deaths
• Quality ▪ Diagnosis not written
▪ Incorrect Diagnosis / symptoms as diagnosis
▪ Lack of timeliness
▪ Lack of facilities for record keeping
Laboratory surveillance
What is lab-based surveillance ?
Using information generated in labs for surveillance
E.g. MRI lab Epid. Unit
What are the advantages of lab surveillance ?
• Immediate information on rare or significant diseases
• Reporting of confirmed diagnosis• Completeness of lab data• Ability to obtain information of patients seen by many physicians
What are the disadvantages of lab surveillance ?
• Non availability of epidemiological information • Lack of representative ness
Reporting from Special Campaigns
- Routinely reported
- From Malaria, Filariasis, STD, Rabies and Respiratory diseases control programme
- Morbidity and Mortality data
- Collected by the campaigns from hospitals
- Data is sent to Epidemiology Unit
Sentinel Surveillance
Surveillance based on the collection of data from a sample (random or non-random) of collecting sites as indicator data for the rest of the population, in order to identify cases of a disease early or to obtain indicative data about trends of a disease or health event.
Uses active surveillance approach
Conducted usually by ICNO
Sentinel’ Sites - Depends on the diseaseE.g. Dengue –all hospitals Leptospirosis, Hep B – Selected
hospitals
For few selected diseasesAFP, Measles, Japanese Encephalitis, Dengue, Hepatitis B, Leptospirosis
Sentinel populations – E.g. Pregnant mothers for syphillis
• What are the advantages of sentinel surveillance ?
• Improves timeliness in reporting• Improves accuracy of data• Improves completeness of data• Only on selected sites• Cost effective
Disadvantages of sentinel surveillance
• Lack of representativeness
• Participation rates may be low and limited to those with great interest or capability
Sample Surveys
• Surveys carried out on specific diseases / risk factors on representative samples
• Usually for research purposes
• One-time process
• Estimates prevalence of disease more accurately
Outbreak Investigation
• Investigation of disease outbreaks
(What is an outbreak ?)• Carried out by a team –MOH, RE, Clinicians, PHIs
• Involves hospital and the field• Purpose is to identify the source of infection and initiate appropriate control measures
• A report is produced
Thank you !
List of Notifiable diseases• Group - A• Cholera• Plague• Yellow Fever
Group B• Acute Poliomyelitis / Acute Flaccid Paralysis• Chicken pox• Dengue Fever / Dengue Haemorrhagic Fever• Diphtheria• Dysentery• Encephalitis• Enteric Fever• Food poisoning• Human Rabies• Leptospirosis• Malaria• Measles• Meningitis• Mumps• Rubella / Congenital Rubella Syndrom• Simple Continued Fever of over 7 days or more• Tetanus• Neonatal Tetanus• Typhus Fever• Viral Hepatitis• Whooping Cough• Tuberculosis
Mechanism of Data Collection
•Bed Head Ticket•Notification Card•Notification Register (Ward)•Notification register (Institution)
Hospitals •In-patients Register
Medical Officer of Health
Medical Statistics Unit
EpidemiologyUnit
(CentralLevel)
Regional Epidemiologist
(DistrictLevel)
Activated Passive
Surveillance
•Notification Register•Weekly Return•ID Register Special
CampaignsPublic Health Inspector
Reference• Website of Epidemiology Unit, Ministry of Health
http://www.epid.gov.lk