Unsafe Food and Child Health

Why Is Unsafe Food Such a Major Public Health Risk?

Foodborne disease is often discussed as a short-term stomach illness, but the public health burden is much broader. Contaminated food can transmit pathogens such as Salmonella, Campylobacter, norovirus and pathogenic Escherichia coli, as well as parasites and chemical toxins. WHO has long identified food safety as a core health issue because unsafe food affects nutrition, child development, maternal health, antimicrobial resistance and health-system demand.

The new WHO estimates place the annual toll at 866 million illnesses and 1.5 million deaths, underscoring that food safety is not only a consumer issue but a prevention priority across farming, manufacturing, retail, household storage and clinical care. The burden is especially serious where refrigeration, clean water, sanitation, inspection systems and access to timely medical care are limited, but outbreaks and recalls can occur in any food system.

Why Are Young Children More Vulnerable to Foodborne Illness?

Children under five face a disproportionate risk from unsafe food because their immune defenses are still developing and their bodies tolerate fluid loss poorly. Vomiting and diarrhea can lead to dehydration quickly, and some infections can trigger severe complications such as bloodstream infection, kidney injury or long-term growth and nutritional consequences.

WHO reports that children younger than five face nearly three times the risk of illness from unsafe food compared with older children and adults. For families, the practical prevention steps remain basic but important: safe water, handwashing, separating raw and cooked foods, cooking foods thoroughly, keeping food at safe temperatures and avoiding unpasteurized or visibly spoiled products for young children.

How Can Foodborne Disease Prevention Improve Health Equity?

Foodborne illness prevention works best when it is built into the entire food chain. Public health agencies use surveillance, outbreak investigation, inspection, recall systems and laboratory testing to identify hazards early. Food producers and retailers rely on hazard-control programs, temperature management and traceability, while clinicians help by recognizing severe dehydration, reporting suspected outbreaks and advising high-risk patients.

Prevention also has an equity dimension. Infants, young children, older adults, pregnant people and immunocompromised patients are more likely to suffer severe outcomes from the same exposure. Policies that improve clean water, sanitation, food-handler training and rapid recall communication can reduce the burden before families need emergency care.