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An infection is the detrimental colonization of a host organism by a foreign species. In an infection, the infecting organism seeks to utilize the host's resources to multiply (usually at the expense of the host). The infecting organism, or pathogen, interferes with the normal functioning of the host and can lead to chronic wounds, gangrene, loss of an infected limb, and even death. The host's response to infection is inflammation. Colloquially, a pathogen is usually considered a microscopic organism though the definition is broader, including feces, parasites, fungi, viruses, prions, and viroids. A symbiosis between parasite and host, whereby the relationship is beneficial for the former but detrimental to the latter, is characterised as parasitism. The branch of medicine that focuses on infections and pathogens is infectious disease.

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Wikipedia about infections

An infection is the detrimental colonization of a host organism by a foreign species. In an infection, the infecting organism seeks to utilize the host's resources to multiply (usually at the expense of the host). The infecting organism, or pathogen, interferes with the normal functioning of the host and can lead to chronic wounds, gangrene, loss of an infected limb, and even death. The host's response to infection is inflammation. Colloquially, a pathogen is usually considered a microscopic organism though the definition is broader, including feces, parasites, fungi, viruses, prions, and viroids. A symbiosis between parasite and host, whereby the relationship is beneficial for the former but detrimental to the latter, is characterised as parasitism. The branch of medicine that focuses on infections and pathogens is infectious disease.

A secondary infection is an infection that occurs during or following treatment of another already existing primary infection.

Colonization

Wound colonization refers to nonreplicating microorganisms within the wound, while in infected wounds replicating organisms exist and tissue is injured. All multicellular organisms are colonized to some degree by extrinsic organisms, and the vast majority of these exist in either a mutualistic or commensal relationship with the host. An example of the former would be the anaerobic bacteria species which colonize the mammalian colon, and an example of the latter would be the various species of staphylococcus which exist on human skin. Neither of these colonizations would be considered infections. The difference between an infection and a colonization is often only a matter of circumstance. Organisms which are non-pathogenic can become pathogenic under the right conditions, and even the most virulent organism requires certain circumstances to cause a compromising infection. Some colonizing bacteria, such as Corynebacteria sp. and viridans streptococci, prevent the adhesion and colonization of pathogenic bacteria and thus have a symbiotic relationship with the host, preventing infection and speeding wound healing.

The variables involved in the outcome of a host becoming inoculated by a pathogen and the ultimate outcome include:

  • the route of entry of the pathogen and the access to host regions that it gains
  • the intrinsic virulence of the particular organism
  • the quantity or load of the initial inoculant
  • the immune status of the host being colonized

As an example, the staphylococcus species present on skin remain harmless on the skin, but, when present in a normally sterile space, such as in the capsule of a joint or the peritoneum, will multiply without resistance and create a huge burden on the host.

Search results for Infections

Tinea Infections: Athlete's Foot, Jock Itch and Ringworm ...

Information about tinea infections from the American Academy of Family Physicians. ... What areas of the body are affected by tinea infections? ...familydoctor.org/316.xml

Tapestry Health: infections stis stds

Tapestry Health is dedicated to providing high-quality, affordable, confidential health services and advocacy in Western Massachusetts.tapestryhealth.org/index.php?page=infections

CA-MRSA: Public FAQs | CDC Infection Control in Healthcare

... gets staph or MRSA infections? What is community-associated ... How can I prevent staph or MRSA skin infections? ... Are staph and MRSA infections treatable? ...www.cdc.gov/ncidod/dhqp/ar_mrsa_ca_public.html

MedlinePlus: Streptococcal Infections

Directory of articles, factsheets, and news. ... Group A Streptococcal Infections(National Institute of Allergy and Infectious Diseases) ...www.nlm.nih.gov/medlineplus/streptococcalinfections.html

AAAAI - Patients & Consumers Center: Tips to Remember: Recurrent or ...

For instance, Lindsay, age two, has had eight ear infections each year of her life. ... Both Lindsay and Mike have a problem with too many infections. ...www.aaaai.org/patients/publicedmat/tips/recurrentinfections....

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News about Infections

Georgia Hospitals Are Working Together to Prevent Surgical Infections

Marketwire via Yahoo! Finance Ten Georgia hospitals are working to improve clinical quality by preventing and reducing surgical infections. The timing of this is important because Medicare and many private insurers have said they will no longer reimburse hospitals for the additional cost of care to treat preventable surgical infections.http://biz.yahoo.com/iw/081002/0439705.html

Anti-Obesity Drugs Could Fight Viral Infections

MedicineNet.comTitle: Anti-Obesity Drugs Could Fight Viral Infections Category: Health News Created: 10/1/2008 2:00:00 AM Last Editorial Review: 10/1/2008http://www.medicinenet.com/guide.asp?s=rss&k=DailyHealth&a=9...

Journal: Scientists Identify Successful 'Anti' Antibiotic That May Help Curb Rising Staph Infections

PR Newswire via Yahoo! Finance For the second year in a row, students and athletes across the country are being hit by antibiotic resistant staph infections known as MRSA. In just over a week, two high school football players have died from the superbug.http://biz.yahoo.com/prnews/081002/aqthv048.html?.v=1

AHRQ Awards $3 Million To Help Reduce Central Line-Associated BloodStream Infections In Hospital ICUs

Medical News TodayThe Agency for Healthcare Research and Quality has awarded nearly $3 million for a contract to help reduce central line-associated bloodstream infections in hospital intensive care units (ICUs) by spreading the knowledge gained from a previous AHRQ-funded project.http://www.medicalnewstoday.com/articles/123807.php

ViraCor Laboratories Launches Comprehensive Testing for Fungal Infections

Centre Daily TimesViraCor Laboratories, a specialty molecular diagnostic reference laboratory that provides same day turnaround for laboratory tests, today announced the launch of a comprehensive mycology, or fungus, testing service that will allow the company to quickly detect potentially deadly fungal infections in patients. Fast diagnosis of fungal infections can significantly improve patient outcomes and ...http://www.centredaily.com/business/story/876406.html

News about Infections

FDA approves Rapaflo for treatment of symptoms due to benign prostatic ...

News-Medical.NetBPH can also lead to an increased risk of urinary tract infections and urinary retention. Urinary retention can damage the kidneys and cause urinary tract infections by mixing urine from the ureter with urine from the bladder that is heavily laden ... http://www.news-medical.net/?id=41895

New test could help catch serious infections in babies

PhysOrgA simple blood test may help detect serious bacterial infections (SBIs) like urinary tract infections and blood stream infections in young infants who come to the emergency department (ED) with fevers that have no clear cause. Researchers at Children ... http://www.physorg.com/news142481450.html

Slow poisoning: Hooked to hookahs through ignorance

Daily TimesOther dangers include infections such as tuberculosis, hepatitis C and some other diseases,” he said. He suggested that sheesha smoking should be banned at commercial level as it was harmful to human health. Awareness of sheesha smoking should be ... http://www.dailytimes.com.pk/default.asp?page=2008\10\13\sto...

Mystery virus pinned down

The TimesArenaviruses cause chronic infections in multimammatic mice — a species of wild mouse. The mice excrete the virus in their urine, which can then contaminate food or house dust, spreading the dangerous disease to humans. Doctor Robert Swanepoel ... http://www.thetimes.co.za/News/Article.aspx?id=861831

Virus identified - nurse ill

BeeldArenaviruses cause chronic infections in multimammate mice - a kind of wild mouse - who excrete the virus in their urine which can then contaminate human food or house dust. Viruses similar to the Lassa fever virus have been found in rodents in ... http://www.news24.com/News24/South_Africa/News/0,,2-7-1442_2...

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Infection The Game from Earwig Enterprises

The Hot new board game from Earwig Enterprises. Infection, the board game, catch it now. ... Doctors, Nurses, Medical Students, Health and Science Teachers, Hypochondriacs, and ... http://www.earwig.net/

Infection Control in Healthcare Settings Home | CDC Infection Control ...

Issues in healthcare settings, (formerly Hospital Infections Program.)http://www.cdc.gov/ncidod/dhqp/

Infections

Who needs a flu shot? How long is mono contagious? This section has tons of articles about infections that teens can get, with information about how they're spread, signs and ... http://kidshealth.org/teen/infections/

Infection and Immunity

American Society for Microbiology journal covering all aspects of infectious disease plus clinical immunologyhttp://iai.asm.org/

MRSA infection - MayoClinic.com

MRSA infection b Comprehensive overview covers symptoms, causes and treatment of this virulent staph infection.http://www.mayoclinic.com/health/mrsa/DS00735
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Yeast Infections and Pregnancy

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StaphAseptic helps prevent MRSA inf...

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The Pulse News - My Chemical Romance, The Black Parade, Nelly...The Pulse News - My Chemical Romance, The Black Parade, Nelly Furtado, HIVE Infections, Myspace and Cigular 1 min 38 sec - Jan 25, 2007 www.ManiaTV.com - Get your Daily Doseflash: 0 MB w:320px - h:240px

Answers for Infections

MZ.

How are microorganisms prevented from causing infections in lower respiratory system?

MZ. "G"Hair like cilia cells beat in rhythem within your respiratory tract thus expelling them. Also there are globlet cells that secret mucus that traps micro organisms and the hair cell sweep them upwards....
OnyX S

How do you get rid of skin infections?

OnyX SHe needs to go to www.notaquitter.com and get some Silver Cream which is a 100% Natural antibacterial agent. It is inexpensive and they ship worlwide. I use it for the same purpose and it works great.
Amanda P

How do you cure chronic outer earlobe infections?

Amanda PIf he has pierced lobes then he need to keep clean them with peroxide and use neosporin on them. Some people are sensitive to different metals and get infections from them too.
2labs

How do I stop my dogs ear infections?

2labsMy dog gets them all the time too. Our vet has us use rubbing alcohol on a cotton ball to clean out his ears. Soak the cotton ball in rubbing alcohol and clean out his ears, going as far in as you c...
mrdilettante

Why is it that I always get sinus infections whenever the weather changes?

mrdilettanteseasonal allergies maybe. i take zinc and magnesium tablets every day during the winter and it keeps me from getting sick.i use to be sick every other week in the winter until i read about zinc. you c...

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