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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 some organisms under certain conditions may cause disease.
Feb 18, 2022 · For infectious diseases, some basic questions to ask your doctor include: What's the most likely cause of my symptoms? Are there other possible causes for my symptoms?
Mar 29, 2024 · Our infectious diseases experts help people with bacterial, fungal, viral and parasitic infections. That includes bloodstream infections and complex or rare conditions caused by emerging infectious diseases and multidrug-resistant microbes. Successful treatment starts with an accurate diagnosis.
Oct 24, 2016 · An infectious disease can be defined as an illness due to a pathogen or its toxic product, which arises through transmission from an infected person, an infected animal, or a contaminated inanimate object to a susceptible host.
Aug 9, 2023 · Infectious diseases are diseases that are caused by germs. What are the different types of germs that cause infectious diseases? There are four main types of germs: Bacteria are one-celled germs that multiply quickly. They may give off toxins, which are harmful chemicals that can make you sick.
Overview of Infectious Disease. By The Manual's Editorial Staff. Reviewed/Revised Jan 2024. VIEW PROFESSIONAL VERSION. Get the full details. What is an infection? |. 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? |.
There are five major categories of infectious agents: Viruses, bacteria, fungi, protozoa, and helminths. Viruses are tiny, ranging in size from about 20 to 400 nanometers in diameter (see page 9). Billions can fit on the head of a pin.
