Infection, Immunity and Inflammation

Infection, immunity, and inflammation are key processes in the body's defense against harmful pathogens. Infection occurs when microorganisms invade the body, triggering an immune response. Innate immunity provides immediate, non-specific defense through barriers and immune cells, while adaptive immunity offers a targeted, long-term response involving T cells and B cells that recognize specific pathogens. Inflammation is a protective reaction to infection or injury, marked by redness, swelling, and pain. Acute inflammation helps eliminate pathogens and promote healing, but chronic inflammation can lead to tissue damage and contribute to diseases like arthritis or cardiovascular issues, highlighting the importance of balance in these responses.