What infections are screened in every donated unit of blood?

• A. Only HIV/AIDS
• B. Only Hepatitis B
• C. Only malaria
• D. HIV/AIDS, Hepatitis B and C, Syphilis and other infectious diseases

Answer: (D)

Screening every donated unit for multiple infections is essential to prevent transfusion-transmitted illnesses. In practice, the standard safety net includes HIV/AIDS, Hepatitis B, and Hepatitis C, along with syphilis, and many blood banks add tests for other infectious agents or use advanced methods like nucleic acid testing to catch early infections. Since a single infection is not the only risk, the most complete option—listing HIV/AIDS, Hepatitis B and C, syphilis, and other infectious diseases—best reflects the comprehensive approach used in blood donation screening. The other choices fall short because they cover only one pathogen and miss the others that are routinely tested.