The scientist awarded the Nobel Prize for discoveries in the field of immunology is Peter Doherty. He was honored with the Nobel Prize in Physiology or Medicine in 1996 for his groundbreaking work on the immune system, specifically in understanding how T cells recognize virus-infected cells. Doherty's research has had a profound impact on the fields of immunology and virology, enhancing our understanding of immune responses and paving the way for advancements in vaccine development and therapies against infectious diseases. His contributions continue to influence medical science and public health.