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- Infectious diseases are illnesses caused by harmful agents (pathogens) that get into your body. The most common causes are viruses, bacteria, fungi and parasites. Infectious diseases usually spread from person to person, through contaminated food or water and through bug bites. Some infectious diseases are minor and some are very serious.
my.clevelandclinic.org/health/diseases/17724-infectious-diseasesInfectious Disease: Types, Causes & Treatments - Cleveland Clinic
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Feb 18, 2022 · Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.
Infectious diseases are illnesses caused by harmful organisms (pathogens) that get into your body from the outside. Pathogens that cause infectious diseases are viruses, bacteria, fungi, parasites and, rarely, prions. You can get infectious diseases from other people, bug bites and contaminated food, water or soil. Advertisement.
Sep 13, 2024 · infectious disease, in medicine, a process caused by an agent, often a type of microorganism, that impairs a person’s health. In many cases, infectious disease can be spread from person to person, either directly (e.g., via skin contact) or indirectly (e.g., via contaminated food or water).
Learn about causes and treatment. Diseases caused by the introduction of infectious agents such as bacteria, viruses, parasites, or fungi into the body.
How do people get infections? | How does my body defend against infections? | What are the symptoms of infection? | How do doctors tell if I have an infection? | How do doctors treat infection? | How can I prevent infections? |
Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.
Viral infection. A virus is a sneaky little bugger whose goal is to get inside your body. When it does enter your body it finds a normal cell to infect. Once it’s inside the cell, the virus...
