What groups of people are more susceptible to infection with Salmonella enteritidis?

• A. Elderly, infants, impaired immune system
• B. Healthy adults with normal immune function
• C. Athletes
• D. Children aged 5-7 only

Answer: (A)

High-risk groups for Salmonella enteritidis infection are those with weaker or developing immune defenses. Infants have an immature immune system and often less gastric acidity, making it easier for the bacteria to establish infection. The elderly commonly experience immune senescence and may have other health conditions that impair their ability to fight off pathogens. People with impaired immune function from disease, medications, or malnutrition are especially susceptible to infection and can develop more severe illness. In contrast, healthy adults with normal immune function generally have a lower risk of infection and severe disease. The option focusing on healthy adults or on a narrow young age group misses the groups most at risk.