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Disease Name: Hepatitis A


Quick Links

Please review the Idaho Reportable Disease Rules (IDAPA 16.02.10) for the most up-to-date information.

IDAPA 16.02.19, “The Idaho Food Code.” (http://www.foodsafety.idaho.gov

Hepatitis A:  http://www.cdc.gov/hepatitis/hav/index.htm


Overview / Case Definition

Hepatitis A virus (HAV) is a positive-stranded RNA virus in the Picornaviridae family.  It is an acute illness with a discrete onset of any sign or symptom consistent with acute viral hepatitis (e.g., fever, headache, malaise, anorexia, nausea, vomiting, diarrhea, and abdominal pain), and either a) jaundice, or b) elevated serum aminotransferase (alanine aminotransferase or aspartate aminotransferase) levels. 


Restrictions

Restrictions - Daycare Facility

A child who has hepatitis A must not attend a daycare facility until the disease is no longer communicable as determined by a licensed physician, or unless an exemption is made by the Department of Health District.  A person with hepatitis A must not work in any occupation in which personal care is provided to children in a daycare facility while the disease is in a communicable form.  The Department of Health District may withdraw this restriction when the illness is considered to no longer be in a communicable form.

Restrictions - Food Service Facility

A food employee with hepatitis A must be managed under IDAPA 16.02.19, “The Idaho Food Code.”  The food employee is no longer restricted if jaundiced for more than 7 calendar days or has had symptoms for more than 14 days.  A specific test for recent hepatitis A infection (IgM anti HAV) must be performed by a licensed laboratory on all food employees suspected of having hepatitis A.

Restrictions - Health Care Facility

A person with hepatitis A in a health care facility must be managed under the Guideline for Isolation Precautions in Hospitals. A person with hepatitis A must not work in any occupation in which personal care is provided to persons who are in a health care facility or living in a residential care facility while the disease is in a communicable form.  The Department or Health District may withdraw this restriction when the illness is considered to no longer be in a communicable form.

Restrictions – Household Contacts 

Any unvaccinated household member where there is a case of hepatitis A must not work in any of the occupations listed above, unless an exemption is obtained from the Department or Health District.


Reporting

1 day

Reportable by Healthcare and Labs:

Reportable by Food Service Facility: Yes

Suspect Reportable: Yes

Reporting Timeframe: 1 day



Diagnosis / Testing

Blood testing for anti-HAV IgM antibody

Note:  The presence of total or IgG anti-HAV antibodies does not confirm active disease and should not be the basis of diagnosis for acute illness. Total antibody level values do not impart any information on whether the infection was acute, only that the person had been exposed to the HAV or vaccine at some point in their life.


Treatment

CDC Q & A about Hepatitis A: http://www.cdc.gov/hepatitis/hav/havfaq.htm#protection.


Additional Information

IDAPA 16.02.19, “The Idaho Food Code.” (http://www.foodsafety.idaho.gov

Hepatitis A:  http://www.cdc.gov/hepatitis/hav/index.htm


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