The chain of components has six sections. They include: Microorganisms: Disease producing, also called pathogens Virus, parasite, fungus, bacterium Risk factors: Virulence, pathogenicity, …

Bacterial infections are caused by harmful bacteria and can affect many parts of your body. They can be minor or serious and are often treated with antibiotics.

Sep 7, 2025 · Infections can occur throughout the body whether caused by bacteria, viruses, parasites, or fungi. Learn some of the signs and symptoms of an infection.

Apr 8, 2025 · Infectious diseases can be caused by: Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. …

Sep 19, 2025 · Infection refers to an invasion of the body by harmful microorganisms or parasites. The severity can range from mild to fatal. Treatment depends on the type of infection.

Vaginal Yeast Infection see Yeast Infections Valley Fever Vancomycin-Resistant Enterococci see Antibiotic Resistance Vancomycin-Resistant Staphylococcus aureus see Antibiotic …

An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. [1] An infectious disease, also …

Feb 4, 2026 · Infectious disease is a process caused by an agent, often a microorganism, that impairs a person’s health. Infectious diseases typically are caused by bacteria, viruses, fungi, …