Shigellosis

Clear→ stable

Gastrointestinal

Current NYS Status

2,938 cases in 2024 — near the 5-year baseline of ~6,389.

2024 statewide cases: 2,938

Source: NYSDOH Annual Communicable Disease Report 2024 + 5-yr baseline

What is it?

Shigellosis is caused by Shigella bacteria and is notable for how easily it spreads — just 10 to 200 bacteria are enough to cause infection. NYS had 2,938 cases in 2024. Drug-resistant Shigella strains are an increasing public health concern, limiting treatment options.

How it spreads

Spreads through the fecal-oral route — when someone ingests tiny amounts of feces from an infected person. This can happen through direct contact, contaminated food or water, or touching contaminated surfaces. Common in childcare settings, group homes, and among travelers.

Symptoms

Diarrhea (often containing blood or mucus), fever, and stomach cramps beginning 1–2 days after exposure. Illness usually lasts 5–7 days. Severe dehydration can occur, especially in young children.

Who is at risk?

Young children aged 2–4, caregivers of young children, international travelers, and men who have sex with men. People in congregate settings (daycares, nursing homes) face elevated exposure risk.

What you can do

🛡Wash hands thoroughly with soap and water after using the toilet, changing diapers, and before preparing food

🛡Do not prepare food for others while sick with diarrhea

🛡Avoid swallowing water when swimming in pools, lakes, or ponds

⚕️Seek medical care for bloody diarrhea, high fever, or signs of dehydration — antibiotic treatment may be needed

Tier B — Annual report tracking

Based on NYSDOH annual communicable disease report. Threat level reflects 2024 case counts compared to the 5-year baseline.

Seasonality: year round

This information is for general public health awareness and is not a substitute for professional medical advice, diagnosis, or treatment.