Shigellosis Outbreak in Kerala: 85 Confirmed Cases Reported, Preventive Measures Underway

Kerala's health authorities have reported 85 confirmed cases and over 70 probable cases of shigellosis (also called bacillary dysentery) as of June 7, 2026. Cases have been recorded across multiple districts including Wayanad, Kozhikode, Alappuzha, and Malappuram, with localised outbreaks emerging in several of these areas. Two deaths in children have been reported — one in April and another on June 6 — both from Kozhikode district. The state Health Minister has directed the Food Safety department to strengthen inspections and issue closure notices to food establishments found operating in unhygienic conditions.

Shigellosis is a bacterial diarrhoeal illness caused by Shigella, a gram-negative, rod-shaped bacterium belonging to the Enterobacteriaceae family. It is the causative agent of bacillary dysentery and is considered one of the most contagious of all bacterial gut infections. The disease is self-limiting in healthy adults, but can be fatal in children under five years of age, elderly persons, and those with weakened immune systems — groups in whom mortality risk is highest.

The primary routes of transmission are contaminated food and water, contact with surfaces touched by infected individuals, and direct person-to-person contact during caregiving. Symptoms typically appear within one to two days of exposure and include fever, diarrhoea, vomiting, nausea, blood in stools, and painful frequent urges to defecate. Health authorities recommend immediate medical attention, completion of the full antibiotic course as prescribed, and use of oral rehydration salts (ORS) to prevent dehydration.

Preventive guidelines issued by the Kerala Health Department emphasise thorough handwashing with soap for at least 20 seconds — including between fingers and under nails — before handling or eating food, and after using the toilet. Drinking water should be boiled regardless of the source, and water used to wash vegetables or utensils should be treated with chlorine tablets. Persons who have had shigellosis are advised to avoid serving food at gatherings or visiting restaurants for at least two weeks after symptoms resolve, even when they feel well.

Exam Takeaway: Shigellosis is a standard topic in public health and communicable disease sections across UPSC, SSC, and State PSC examinations. Key facts to retain: causative agent is Shigella bacteria; disease is also known as bacillary dysentery; transmission is faeco-oral via contaminated food, water, and contact; high-risk groups include under-five children and immunocompromised individuals; ORS is the first-line dehydration management; and the outbreak setting (Kerala, 2026) illustrates water- and food-borne disease dynamics relevant to India's disease surveillance framework under the Integrated Disease Surveillance Programme (IDSP).