34 People Across 13 States Sickened by Same Salmonella Strain: What You Need to Know

As of April 23, 2026, the Centers for Disease Control and Prevention (CDC) has confirmed a multistate outbreak of Salmonella infections linked to contact with backyard poultry, with 34 confirmed cases across 13 states. This ongoing investigation underscores a persistent public health challenge: the zoonotic transmission of enteric pathogens from domestic fowl to humans, particularly in non-commercial settings where biosecurity measures may be inconsistent.

Key Clinical Takeaways:

• Backyard poultry, including chicks and ducklings, can harbor Salmonella in their intestines without showing signs of illness, posing a risk to handlers through fecal-oral transmission.
• Children under five years old represent a disproportionate share of cases in such outbreaks due to developing immune systems and frequent hand-to-mouth behaviors.
• Effective prevention relies on consistent handwashing with soap after poultry contact, avoiding kissing or snuggling birds and keeping flocks outdoors to reduce indoor contamination.

The current outbreak, identified through PulseNet surveillance and whole-genome sequencing, involves Salmonella serotype Hadar, a strain previously associated with poultry-related illnesses in 2021 and 2022. Epidemiological interviews reveal that 80% of ill individuals reported contact with backyard poultry prior to symptom onset, with exposure occurring at homes, agricultural feed stores, and through mail-order hatcheries. The median age of patients is 31 years, with a range from 1 to 78 years; 28% are under five years old, and 12 individuals have required hospitalization. No deaths have been reported to date.

From a pathophysiological standpoint, Salmonella Hadar invades intestinal epithelial cells via type III secretion systems, triggering neutrophilic inflammation and secretory diarrhea. Asymptomatic carriage in poultry is common, with birds shedding bacteria intermittently in feces, thereby contaminating feathers, feet, and surrounding environments. This environmental persistence complicates eradication efforts in residential settings where coops may lack proper sanitation protocols.

“Backyard poultry ownership has surged in recent years, but many fresh owners lack awareness of the infectious risks involved. Simple hygiene practices are highly effective at preventing transmission, yet adherence remains inconsistent.”

Historical context reveals a recurring pattern: since 2015, the CDC has documented over 1,200 cases of Salmonella linked to backyard poultry in annual outbreaks, peaking during spring months coinciding with chick sales. A 2023 study in Emerging Infectious Diseases found that mail-order hatcheries contributed to 60% of traceable outbreaks, highlighting the role of commercial distribution networks in disseminating infected stock. The current investigation is being conducted in collaboration with state health departments and the United States Department of Agriculture (USDA), which oversees hatchery certification under the National Poultry Improvement Plan (NPIP).

Prevention strategies endorsed by the CDC and the American Veterinary Medical Association (AVMA) emphasize source reduction and personal protection. These include purchasing poultry from hatcheries participating in NPIP’s Salmonella Monitoring Program, isolating new birds for 30 days, and supervising children during interactions. Environmental sampling of coops has demonstrated that Salmonella can persist in soil and wood shavings for months, reinforcing the demand for routine cleaning and disinfection.

“We see clusters of illness not because the birds are inherently dangerous, but because the human-animal interface is often managed without adequate infection control. Education must accompany ownership.”

For individuals experiencing symptoms such as diarrhea, fever, and abdominal cramps following poultry contact, timely medical evaluation is critical. Although most cases resolve with supportive care, severe infections may require antibiotic intervention, particularly in immunocompromised patients or those with bacteremia. Diagnostic confirmation relies on stool culture or molecular testing, available through clinical laboratories affiliated with hospital systems and public health departments.

In light of this outbreak, individuals seeking guidance on safe poultry handling or concerned about potential exposure should consult with qualified professionals. Preventive counseling is available through preventive medicine specialists who specialize in zoonotic disease risk mitigation. For diagnostic evaluation of gastrointestinal symptoms, board-certified gastroenterologists can provide appropriate testing and management. Those involved in poultry husbandry seeking to improve biosecurity may benefit from consulting licensed veterinarians with expertise in avian health and flock management.

This outbreak serves as a reminder that infectious disease risks extend beyond traditional healthcare settings into everyday domestic environments. As backyard agriculture continues to grow in popularity, integrating one health principles — recognizing the interconnectedness of human, animal, and environmental health — will be essential to preventing future transmissions. Ongoing surveillance, targeted education, and collaboration between public health, agricultural, and veterinary sectors remain the cornerstone of effective mitigation.

*Disclaimer: The information provided in this article is for educational and scientific communication purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider regarding any medical condition, diagnosis, or treatment plan.*