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1. For a microorganism to enter, invade, or inhabit another organism, causing infection or contamination.
2. To dwell internally, endoparasitically, as opposed to externally (infest).
[L. in-ficio, pp. -fectus, to dip into, dye, corrupt, infect, fr. in + facio, to make]
Farlex Partner Medical Dictionary © Farlex 2012


tr.v. in·fected, in·fecting, in·fects
1. To invade and proliferate in, often resulting in disease. Used of microorganisms or other infectious agents: people who were infected with salmonella.
2. To cause the invasion of (a cell, for example) with a microorganism or other infectious agent: The researchers infected the bacteria with a virus.
3. To transmit a pathogen or disease to: The sick child infected the entire class.
4. To contaminate with a pathogenic microorganism or agent: Cholera infected the water supply.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


1. To enter, invade, or inhabit another organism, causing infection or contamination.
2. To dwell internally, endoparasitically, as opposed to externally.
[L. in-ficio, pp. -fectus, to dip into, dye, corrupt, infect, fr. in + facio, to make]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Patient discussion about infect

Q. Yeast infection in bloodstream How to get rid of yeast infection systemically.

A. there are several treatments and medications against systemic fungal infections, yeasts included. but in order to get treated you have to go through a proper diagnosis and a Dr. should check what kind of fungus you are having and prescribe the medication that fits it. me throwing all sort of medication names won't give you anything. this has to be checked out with a blood test and a culture.

Q. Is this an infection or pregnancy? I am worried with the white odorless mucus discharge. My hubby and I are also trying for baby. I have browsed the web and found that this could be possible infection also. Is this an infection or pregnancy?

A. It’s a cervical discharge and mucus secreted may be majorly a sign of pregnancy. I too had the same symptom but was tested positive for pregnancy. At times it may be a normal vaginal discharge. Generally it will be a yeast infection. Just check for your body temperature changes as it indicates good for you. Your mucus will be like raw egg white, the more thick more chances for positive. Keep a check on these factors. I shall suggest you to visit the doctor to confirm the same instead of making your own conclusions.

Q. What are the symptoms of salmonella infection?

A. Dehydration is the principal clinical concern. The incubation period – the time between ingestion of Salmonella bacteria and the onset of illness – varies from six to 72 hours.Salmonella can cause three different kinds of illness: gastroenteritis, typhoid fever, and bacteremia.Symptoms of Salmonella gastroenteritis include diarrhea, abdominal cramps, fever, nausea, and/or vomiting.In mild cases diarrhea may be non-bloody, occur several times per day, and not be very voluminous; in severe cases it may be frequent, bloody and/or mucoid, and of high volume. Fever generally occurs in the 100°F to 102°F (38°C to 39°C) range. Vomiting is less common than diarrhea. Headaches, myalgias (muscle pain), and arthralgias (joint pain) are often reported as well.Whereas the diarrhea typically lasts 24 to 72 hours, patients often report fatigue and other nonspecific symptoms lasting 7 days or longer. For the full article:

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References in periodicals archive ?
Suitable conditions for transmission in the kudu population after initial infection by rabid carnivores are provided by the social behavior of kudus, such as browsing on thorny acacia trees and resultant lesions in the kudus' oral cavity, and excretion of relatively high titers of virus in the saliva of infected animals (15).
The virus infects the lungs and can lead to pneumonia and more dangerous problems, especially in young children under two years of age, the elderly, and the immunocompromised.
They usually infect executable files with these extensions: *.COM, *.EXE, *.DRV, *.DLL, *.BIN, *.OVL and *.SYS.
(One possible approach would be to genetically engineer a CD4 cell that cannot be infected by HIV.)
PDT on Tuesday, The Cooperative Association for Internet Data Analysis, or CAIDA, part of UC San Diego's Supercomputer Center, had logged 150,000 infected computer servers and PCs worldwide.
Some health officials have resorted to emergency vaccinations (injections that trigger the immune system to fight disease), which has sparked controversy across Europe: vaccinated animals can still carry the disease, and vets can't easily tell vaccinated animals from infected ones.
Some of the T-cell signals produce inflammatory reactions; other signals recruit and activate specialized cells to kill bacilli and wall-off infected macrophages in tiny, hard grayish nodules known as tubercles.
For example, they've successfully used lysin to treat animals infected with bacteria that cause strep throat and pneumonia in people (SN: 6/10/00, p.
A relatively recent outbreak of >1,700 confirmed cases of measles in Houston during 1988-1989 also resulted in a high rate of serious complications among infected pregnant women, which suggests that the outbreak disproportionately affected pregnant women (10).
By following a trail of more than 300 people infected with Ebola, the team deduces that Patient Zero--the first infected person--was a charcoal worker whose job sent him into the rainforest.
Usually picked up in early childhood, it infects almost all adults.
Since last May, chickens infected with a "bird flu" virus, known as A(H5N1), transmitted it to at least 18 people.