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Communicable Disease & Epidemiology

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Main: (801) 525-5200
Fax: (801) 525-5210

Enteric (also known as gastrointestinal or GI) diseases are caused by bacterial, viral, or parasitic organisms that are shed in the feces and can be spread person-to-person or through contaminated food and water.  Symptoms of enteric diseases usually include nausea, vomiting, and diarrhea.

There were 177 enteric disease cases reported during 2018.  Campylobacteriosis was the most frequently reported disease with 46 cases (26.0%), followed by salmonellosis with 40 cases (22.6%), norovirus with 35 cases (19.8%), giardiasis with 22 cases (12.4%), Shiga toxin-producing E. coli (STEC) with 18 cases (10.2%), cryptosporidiosis with nine cases (5.1%), shigellosis with four cases (2.3%), cyclosporiasis with two cases (1.1%), and vibriosis with one case (0.6%). 

Enteric Diseases, Davis County, 2018


Just over half of the cases were female (50.3%) and rates of illness were highest among those between 60-69 years of age. 

Incidence of Enteric Diseases by Age Group, Davis County, 2018


In 2018, enteric diseases were reported among residents of every city within Davis County.  The rate by city varied, but the average rate of enteric diseases was 50.9 per 100,000 residents.

Incidence of Enteric Diseases by City, Davis County, 2018

Enterics by city with labels

Enteric diseases are reported year-round, with a higher incidence typically during the summer months.  In 2018, enteric illnesses peaked during September, due to increased circulation of norovirus across the Wasatch Front, as well as an increase of illness due to salmonellosis, which was linked to a nationwide outbreak. 

Gastrointestinal Diseases by Month Reported, Davis County, 2018


New Year's Day

Saturday, Jan 01

Martin Luther King Jr. Day

Monday, Jan 17

President's Day

Monday, Feb 21

Memorial Day

Monday, May 30

Juneteenth (Observed)

Monday, Jun 20

Independence Day

Monday, Jul 04

Pioneer Day (Observed)

Monday, Jul 25

Labor Day

Monday, Sep 05

Veterans' Day

Friday, Nov 11


Thursday, Nov 24 & Friday, Nov 25

Christmas Eve (Observed)

Friday, Dec 23

Christmas Day (Observed)

Monday, Dec 26