Infants are most susceptible to bacterial infection due to low circulating levels of IgG

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Infants are most susceptible to bacterial infection due to low circulating levels of IgG Answer: At 3-12 months of age

Question context

This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.