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Other links
concerning Notifiable Conditions |
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Posters |
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Associated Programs |
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Surveillance and Reporting Guidelines for
Diseases of Waterborne Origin
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back to
Diseases of Waterborne Origin index page |
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Disease
Reporting |
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In Washington |
DOH receives 0 to 3 reports of waterborne outbreaks per year,
involving approximately 0 to 300 ill persons.
Outbreaks of illness after consumption or use of water intended
for drinking, as well as outbreaks associated with exposure
(ingestion, contact or inhalation) to recreational water -
excluding wound infections - caused by water-related organisms
are reportable to health authorities. Organisms causing
waterborne outbreaks include Norwalk-like viruses (NLV), E.
coli O157:H7*, hepatitis A*, Pseudomonas, Cryptosporidium*,
and Giardia*.
* Individual cases are also
reportable; see specific disease guidelines for more
information. |
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Purpose of Reporting and
Surveillance |
- To identify sources of transmission (e.g., a public
swimming area) and to prevent further transmission from such
sources.
- When the
source is a risk for only a few individuals (e.g., a private
well), to inform those individuals how they can reduce their
risk of exposure.
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Reporting Requirements |
- Health care providers: immediately notifiable to Local
Health Jurisdiction
- Hospitals: immediately notifiable to Local Health
Jurisdiction
- Laboratories: see disease-specific requirements
- Local health jurisdictions: suspected or confirmed
outbreaks are immediately notifiable to DOH Communicable
Disease Epidemiology: 1-877-539-4344
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Case Definition for Surveillance |
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Outbreak Definition |
- Confirmed: Laboratory evidence of a specific agent.
- Probable: In the absence of laboratory evidence, if the
following criteria are met, the cluster is reportable as a
probable outbreak.
- Water identified as source of illness, and
- Clinical syndrome
compatible with defined etiologic agents associated with
waterborne illness.
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