Learning Objectives By the end of this section, you will be able to: Clinical Focus Part 1 Angela, a 25-year-old female patient in the emergency department, is having some trouble communicating verbally because of shortness of breath. A nurse observes…
Figure 17.1 Varicella, or chickenpox, is caused by the highly contagious varicella-zoster virus. The characteristic rash seen here is partly a result of inflammation associated with the body’s immune response to the virus. Inflammation is a response mechanism of innate immunity that…
16.1 The Language of Epidemiologists 16.2 Tracking Infectious Diseases 16.3 Modes of Disease Transmission 16.4 Global Public Health
Learning Objectives By the end of this section, you will be able to: A large number of international programs and agencies are involved in efforts to promote global public health. Among their goals are developing infrastructure in health care, public…
Learning Objectives By the end of this section, you will be able to: Understanding how infectious pathogens spread is critical to preventing infectious disease. Many pathogens require a living host to survive, while others may be able to persist in…
Learning Objectives By the end of this section, you will be able to: Epidemiology has its roots in the work of physicians who looked for patterns in disease occurrence as a way to understand how to prevent it. The idea…
Learning Objectives By the end of this section, you will be able to: Clinical Focus Part 1 In late November and early December, a hospital in western Florida started to see a spike in the number of cases of acute gastroenteritis-like…
Figure 16.1 Signs like this may seem self-explanatory today, but a few short centuries ago, people lacked a basic understanding of how diseases spread. Microbiology has greatly contributed to the field of epidemiology, which focuses on containing the spread of disease. (credit:…
15.1 Characteristics of Infectious Disease 15.2 How Pathogens Cause Disease 15.3 Virulence Factors of Bacterial and Viral Pathogens 15.4 Virulence Factors of Eukaryotic Pathogens
Learning Objectives By the end of this section, you will be able to: Although fungi and parasites are important pathogens causing infectious diseases, their pathogenic mechanisms and virulence factors are not as well characterized as those of bacteria. Despite the…