Infectious Deisease Deifinition. Viruses that invade and multiply inside healthy cells. An infection is the invasion of an organism's body tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agents and the toxins they produce.
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Viruses are sometimes referred to as microbes because, like microbes, they are microscopic and can cause disease. Put simply, an infectious disease happens when bad germs get into the body in some way, spread, and make you sick by affecting the way your body normally works. Each disease is associated with a set of signs and symptoms.
It May Be Contagious In Origin, Result From Nosocomial Organisms, Or Be Due To Endogenous Microflora From The Nose And Throat, Skin, Or Bowel.
Avian influenza cdc faq's more. Viruses are sometimes referred to as microbes because, like microbes, they are microscopic and can cause disease. Diseases within animal populations are crossing into human populations with increasing frequency.
Emerging Infectious Diseases Are Diseases That (1) Have Not Occurred In Humans Before (This Type Of Emergence Is Difficult To Establish And Is Probably Rare);
Or (3) have occurred throughout human history but have only recently been. The diseases can be spread, directly or indirectly, from one person to another. Many are also communicable diseases, meaning they can be passed from one person or animal to another.
Infectious Diseases Are Caused By Infectious Agents (Bacteria, Viruses, Parasites Or Fungi Or Their Toxic Products).
These infectious diseases can be transmitted by animals, humans, insects or other agents. Our infectious diseases experts help people with bacterial, fungal, viral and parasitic infections. (2) have occurred previously but affected only small numbers of people in isolated places (aids and ebola hemorrhagic fever are examples);
However, Some Will Become Seriously Ill And Require Medical Attention.
Infectious agents are present all around us, and they come in different shapes and sizes. Diseases caused by organisms that can spread directly from person to person. 252 rows conjunctivitis (inflamed eyes, usually without pus formation like pink eye) enlargement of the lymph nodes of the neck.
Infectious Disease One Due To Organisms Ranging In Size From Viruses To Parasitic Worms;
Infectious diseases in humans are caused by microorganisms including: A disease that can be transmitted from one person to another contamination: 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).
