Chlamydial Infections
Chlamydial Infections Chlamydia trachomatis infections are the most commonly reported notifiable disease in the United States. In addition, C. trachomatis is the most common bacterial sexually transmitted infection in the…
Genital Mycoplasmas
Genital Mycoplasmas The mycoplasmas are a unique group of microorganisms that commonly inhabit the mucosa of the respiratory and genital tracts. These include Mycoplasma pneumoniae, the agent responsible for atypical…
Group B Streptococci
Group B Streptococci Since the last edition of this text, considerable progress has been made in the prevention of perinatal group B streptococcal (GBS) infections. In the summer of 2002,…
Epidemiology of Helminth Infections
Epidemiology of Helminth Infections Clive J. Shiff INTRODUCTION Parasitism is a way of life. Over evolutionary time, the niche by which one species depends on another for subsistence has been…
The Epidemiology and Control of Malaria
The Epidemiology and Control of Malaria William J. Moss Richard H. Morrow BACKGROUND, HISTORY, AND PUBLIC HEALTH IMPORTANCE History of Malaria Control Vertebrates, mosquitoes, and plasmodia have been interacting and…
Emerging Vector-Borne Diseases
Emerging Vector-Borne Diseases Kenrad E. Nelson INTRODUCTION In the last two decades, several vector-borne infections have emerged as major causes of human morbidity and mortality. A dramatic recent example is…
Lyme Disease
Lyme Disease Diane E. Griffin INTRODUCTION In 1975, a concerned mother from Old Lyme, Connecticut (Figure 26-1), reported to the Connecticut State Health Department that 12 children in her small…
Sexually Transmitted Diseases
Sexually Transmitted Diseases Charlotte A. Gaydos INTRODUCTION In the United States, 19 million new cases of sexually transmitted diseases (STDs) occur annually, costing $10-17 billion per year and primarily affecting…
Viral Hepatitis
Viral Hepatitis Kenrad E. Nelson David L. Thomas INTRODUCTION Hepatitis is inflammation of the liver, which may be caused by viral or other infections, toxins, and a number of other…
Human Immunodeficiency Virus Infections and the Acquired Immunodeficiency Syndrome
Human Immunodeficiency Virus Infections and the Acquired Immunodeficiency Syndrome Kenrad E. Nelson David D. Celentano INTRODUCTION The human immunodeficiency virus (HIV) epidemic is as modern an epidemic as it is…
