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Cryptosporidiosis

Scientific name
Cryptosporidium parvum / C. hominis
Organism type
Parasite
Symptoms
Watery diarrhea, stomach cramps, dehydration, nausea, vomiting, fever.
Incubation period
Average 7 days (range 2-10 days)
Transmission
Contaminated water (including swimming pools), contaminated food, contact with infected animals or people.

A diarrheal disease caused by the Cryptosporidium parasite, tolerant of chlorine and a leading cause of recreational water illness.

Limited data currently published for this disease

Public Health Trace does not yet have any commonly associated foods for Cryptosporidiosis. Everything below reflects only what has actually been published.

Provisional data. Reported case counts for the most recent weeks are provisional and subject to revision by CDC as more reports come in.

Reported case trend

There isn't enough reported data in this period to summarize a trend.

Reported cases by state

No states reported cases in this dataset for the selected period.

Case-level state data unavailable

CDC's weekly surveillance reports aren't currently linked to individual states in Public Health Trace's data (a known data-pipeline gap, not a lack of real activity). The map below, built from individual reported outbreak investigations instead, is a real, working substitute for state-level context on this disease.

Historical outbreaks by state

A map shading each state by the number of historical outbreak investigations linked to this disease.

Shading reflects state-level totals only, as published by the source. It does not imply county-level or point-level precision.

Show full state data table
Historical outbreaks by state
State Outbreak count
Minnesota 10
Utah 8
Pennsylvania 7
Illinois 6
Georgia 6
Ohio 6
Colorado 5
Tennessee 4
Nebraska 4
Wisconsin 4
Kentucky 3
North Carolina 3
Maine 3
Michigan 3
South Carolina 3
Massachusetts 2
Iowa 2
Texas 2
Virginia 2
West Virginia 2
North Dakota 2
South Dakota 2
New Mexico 1
New Hampshire 1
Wyoming 1
Vermont 1
Florida 1
Louisiana 1
Arizona 1
Puerto Rico 1
Maryland 1
Missouri 1

Active investigations aren't included here -- FDA and CDC elevated-activity sources report at a national level, not by individual state. See current alerts for those.

Historical outbreaks

Past outbreak investigations linked to Cryptosporidiosis, newest first.

Outbreak United StatesHistorical record

Cryptosporidium;Norovirus Genogroup II;Sapovirus unknown;Escherichia coli, Enteropathogenic;Escherichia coli, Enteroaggregative;Rotavirus

State
Tennessee
Cases
16
Start date
October 1, 2023
Last updated

Source: CDC NORS Archive

View Investigation

View all 100 historical outbreaks

Outbreak United StatesHistorical record

Cryptosporidium unknown;Sapovirus;Norovirus unknown

State
Nebraska
Cases
45
Start date
June 1, 2022
Last updated

Source: CDC NORS Archive

View Investigation

Outbreak United StatesHistorical record

Escherichia coli, Shiga toxin-producing;Cryptosporidium unknown

State
South Carolina
Cases
5
Start date
March 1, 2022
Last updated

Source: CDC NORS Archive

View Investigation

Outbreak United StatesHistorical record

Campylobacter coli;Salmonella enterica;Escherichia coli, Enterotoxigenic;Cryptosporidium unknown;Escherichia coli, Enteropathogenic

State
Wisconsin
Cases
2
Start date
July 1, 2021
Last updated

Source: CDC NORS Archive

View Investigation

Outbreak United StatesHistorical record

Cryptosporidium hominis;Cryptosporidium parvum

State
Tennessee
Cases
22
Start date
June 1, 2021
Last updated

Source: CDC NORS Archive

View Investigation

Outbreak United StatesHistorical record

Escherichia coli, Shiga toxin-producing;Cryptosporidium unknown;Sapovirus unknown;Escherichia coli, Enteropathogenic;Escherichia coli, Shiga toxin-producing

State
Utah
Cases
35
Start date
June 1, 2021
Last updated

Source: CDC NORS Archive

View Investigation

Outbreak United StatesHistorical record

Cryptosporidium parvum;Cryptosporidium unknown;Escherichia coli, Enteropathogenic;Escherichia coli, Enteroaggregative

State
Wisconsin
Cases
10
Start date
October 1, 2020
Last updated

Source: CDC NORS Archive

View Investigation

Search historical outbreaks for Cryptosporidiosis

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This page describes reported surveillance data, not a diagnosis or individualized medical or treatment advice. If you believe you are experiencing symptoms of a foodborne illness, contact a healthcare provider. Read the full medical disclaimer.