An infant with recurrent bacterial and fungal infections is suspected to have an immunodeficiency disease. Within two days after exposure to a pathogen, the organisms have proliferated to dangerous levels requiring immediate systemic antibiotic treatment. It is unlikely that this infant has a defect in B or T lymphocyte responses to the infection because Systemic infections of bacteria and fungi are usually cleared by the spleen Adaptive immune responses require dendritic cells to take up and degrade pathogens O Bacteria and fungi are not efficiently transported to draining lymph nodes to initiate adaptive immune 'responses The defective immune response occurs too rapidly following infection to be due to a defect in B or T lymphocytes responses

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A:

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Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.