Drug-Resistant Stomach Bug On The Rise: What To Know In CT

A drug-resistant stomach illness is becoming more common in the United States, raising concerns among public health officials and prompting closer monitoring in Connecticut.

A recent report from the Centers for Disease Control and Prevention found that cases of extensively drug-resistant Shigella infections have increased significantly over the past decade.

Shigellosis is a diarrheal illness caused by Shigella bacteria. It spreads easily through contact with contaminated surfaces, food, water or through person-to-person contact, including sexual contact.

While most cases are mild, the CDC said antibiotic treatment may be needed in more severe infections or to prevent the spread in high-risk settings.

However, the report found a growing share of infections are resistant to multiple commonly used antibiotics. Among nearly 17,000 samples analyzed nationwide, the percentage of drug-resistant strains rose from 0% in 2011 to 8.5% in 2023.

Health officials say the rise in resistant strains could make infections harder to treat and increase the risk of spread.

There are an estimated 450,000 infections across the United States annually.

In Connecticut, cases of shigellosis have fluctuated in recent years, according to the state Department of Public Health.

There were 173 reported cases in 2023 and 189 in 2024. Preliminary data shows 148 cases in 2025, though officials note that number is not yet final.

State health officials said shigellosis is a reportable condition in Connecticut, meaning laboratories and healthcare providers are required to report cases to help track trends over time.

The CDC report also found that many recent drug-resistant cases have occurred among adults, particularly men, and that about one-third of patients were hospitalized.

Officials say the findings highlight the importance of early detection, testing and reporting to help limit the spread of the illness.

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The most common symptoms are mild or severe diarrhea, often with fever and traces of blood or mucus in the stool. Some may experience nausea and vomiting, although others may be asymptomatic.

If symptoms do occur, they can appear anywhere from 1 to 7 days following exposure, but usually appear in 1 to 3 days.

Handwashing is one of the most effective ways to prevent infection, especially after using the toilet, changing diapers, touching any stool-soiled material, before handling food or drink.