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Abstract
Ageing is associated with progressive immune dysfunction characterized by immunosenescence.
- Immunosenescence affects both innate and adaptive immunity.
- Ageing leads to reduced production of nave T and B cells.
- There is an accumulation of senescent immune cells with age.
- The ability to recognize pathogens is impaired in older individuals.
- A persistent low-grade inflammatory state, known as inflammaging, occurs even without infection.
- These changes contribute to increased susceptibility to infections and poor vaccine responses.
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