Sep 19, 2025 · An infection occurs when a microorganism — such as bacteria, fungi, or a virus — enters a person’s body and begins multiplying.

May 16, 2025 · Infectious diseases are illnesses caused by harmful germs (pathogens) that get into your body. The most common causes are viruses, bacteria, fungi and parasites. Infectious diseases …

An infection is a condition caused by harmful microorganisms such as bacteria, viruses, fungi, or parasites invading the body. These pathogens disrupt normal bodily functions and can lead to a wide …

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 known as a …

Feb 9, 2026 · infection, the process by which harmful microorganisms such as bacteria, viruses, fungi, or parasites enter cells and tissues in the body and cause disease. Infection may be localized or …

Infection is the condition when the host’s cells or tissues come in contact with the infectious parasite or pathogen. In contrast, infectious disease is a rare consequence or an illness resulting from an infection.

Dec 7, 2023 · According to WHO, an infection is the invasion and multiplication of harmful microorganisms, such as bacteria, viruses, or parasites, within a host organism. Infections can occur …

Sep 20, 2022 · An infection occurs when a pathogen or microorganism invades the body and multiplies. Learn more about the types and treatments for infections here.

An infection occurs when harmful germs (microorganisms) enter the body, multiply and cause disease. The chain of infection refers to how germs spread (Figure 1.1).

Middle English infeccioun "morbid condition of a body part, disease, contamination," borrowed from Anglo-French & Late Latin; Anglo-French infeccioun, enfection, borrowed from Late Latin infectiōn-, …