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Related to infect: infest, Secondary infection, primary infection


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]


/in·fect/ (in-fekt´)
1. to invade and produce infection in.
2. to transmit a pathogen or disease to.


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.


Etymology: L, inficere, to stain
to transmit a pathogen that may induce development of an infectious disease in another person.


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]

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 ?
Typically an avian flu virus first infects pigs, then humans.
If that virus goes on to a new individual, the virus should be well-equipped to infect an epithelial cell," says Hutt-Fletcher.
Therefore, any viremia levels we observed should be sufficient to infect at least some Cx.
After it infects a computer, a Warhol worm would then split the remainder of the initial victim list with the newly installed worm.
Though tuberculosis is less common in developed countries than it was a century ago, it infects nearly one in three people worldwide and is especially common in those with immune disorders such as AIDS.
Workers are getting infected at home by opening up a personal email and then they log into their corporate extranet and infect the whole corporate network.
At the ASM meeting, Intralytix cofounder and Georgian scientist Alexander Sulakvelidze described his firm's progress in identifying phages that destroy the Salmonella bacteria that commonly infect meat, poultry, and eggs.
0 machine is connected to the internet, the worm will access it directly and use the WebDAV vulnerability to infect it remotely.
This is the first time that biologists have shown that a virus takes advantage of one type of immune cell to infect another, says Yvette van Kooyk of the University Medical Center St.
Researchers recently found that HIV and a member of the poxvirus family, which includes variola, infect cells by using some of the same cell-surface proteins.
13, following the discovery of the worm, F-Secure's anti-virus laboratory was able to reverse-engineer the peer-to-peer protocol that the worm exploits to infect machines.
This chemical seems to suppress other immune cells from making several other compounds that stymie HIV's ability to infect cells.