PPT-Immune response to virus infections

The relationship between viruses and the immune system is much more intimate than it is for most bacteria viruses often modify the cells within which they replicate thereby rendering them foreign and susceptible to attack by sensitized lymphocytes furthermore . What influenza virus does when it infects and lessons from past & present. S. Mark Tompkins, PhD. Center for Vaccines and Immunology. Department of Infectious Diseases. March 20, 2017. 1. Linda M. . IMMUNIZATION. . Introduction. Following an initial encounter with a pathogen, memory immune cells . are established. . . Reexposure. . to that same pathogen . reawakens these . memory cells to control the secondary infection . (HIV). Independent Nursing Studies . NURS 420. . Student Presentation. Objectives. :. History of illness . Definition. OTHER NAMES FOR HIV. Pathophysiology. Diagnosis. Etiology . Signs and symptoms. LYMPHOCYTES. Are the key cells of the immune system. Two types: B and T. Both produced in the bone marrow. B matures in the bone marrow. T matures in the thymus. Immunocompetency. B and T lymphocytes must recognize “self.”. Infection. Human Immunodeficiency Virus. Genetics. Altered Immune Responses and Transplantation. Nursing Care of Clients with Lymph Disorders. Bacterial, Viral, and Fungal Infections: Prevention, Assessment and Interventions.. Infection. Human Immunodeficiency Virus. Genetics. Altered Immune Responses and Transplantation. Nursing Care of Clients with Lymph Disorders. Bacterial, Viral, and Fungal Infections: Prevention, Assessment and Interventions.. HIV. (Human immunodeficiency virus)- a virus that attacks the immune system.. Infection with HIV can be prevented. Responsible decisions is the most valuable tool for protection against HIV.. Example: Abstinence from sexual activity and injecting drugs reduce your risk.. Chapter 4. Introduction. Molecules recognized as “non-self” are antigens. Several mechanisms to protect itself . First level of protection include physical and biochemical-skin, acid in stomach. Second level of protection phagocytic cells, enzymes, and proteins. To protect the body from infection or disease. Can be infectious or noninfectious. Infectious Disease. Disease caused by pathogens (bacteria, viruses, fungi, . protists. ). How pathogens are spread. Infected people. The Immune System. The immune system is a group of cells & soluble molecules, which interact & distinguish patterns in the body as “self” or “non-self,” in order to eliminate those that are “non-self.”. . pathogenesis . Viral . disease. . :proliferation . of a harmful . virus.  inside . the body and cause disease.. . Viral pathogenesis . interaction . Immunological unresponsiveness to self is referred to as . tolerance. or . self-tolerance. Very important to human health. How is this achieved?. -cells with receptors for self-antigens are destroyed in the thymus or bone marrow (central tolerance). S. Mark Tompkins, PhD. Center for Vaccines and Immunology. Department of Infectious Diseases. March 20, 2017. 1. Linda M. . Stannard. , University of Cape Town. Influenza viruses. 2. Influenza A virus. infections. Lec. . 3. The relationship between viruses and the immune system is much more intimate than it is for most bacteria: viruses often modify the cells within which they replicate, thereby rendering them ‘foreign’ and susceptible to attack by sensitized lymphocytes; furthermore, .