Leukopenia is a decrease in white blood cells and is typically associated with which type of infection?

Leukopenia is a decrease in white blood cells and is typically associated with which type of infection?

• A. Bacterial infection
• B. Viral infection
• C. Fungal infection
• D. Parasitic infection

Answer: (B)

Leukopenia means a lower-than-normal white blood cell count. Infections influence white blood cell numbers differently depending on the pathogen. Bacterial infections typically trigger an increased WBC count, especially neutrophils, leading to leukocytosis. Viral infections, however, often suppress or reduce white blood cells, particularly lymphocytes, resulting in leukopenia. Fungal and parasitic infections can show a range of responses but do not classically cause the same pattern of leukopenia as viruses. So, when leukopenia is present, a viral infection is the most likely association.

Leukopenia means a lower-than-normal white blood cell count. Infections influence white blood cell numbers differently depending on the pathogen. Bacterial infections typically trigger an increased WBC count, especially neutrophils, leading to leukocytosis. Viral infections, however, often suppress or reduce white blood cells, particularly lymphocytes, resulting in leukopenia. Fungal and parasitic infections can show a range of responses but do not classically cause the same pattern of leukopenia as viruses. So, when leukopenia is present, a viral infection is the most likely association.