infectious disease

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caused by or capable of being communicated by infection.
infectious disease one due to organisms ranging in size from viruses to parasitic worms; it may be contagious in origin, result from nosocomial organisms, or be due to endogenous microflora from the nose and throat, skin, or bowel. See also communicable disease.

An emerging infectious disease is one that is endemic in a given population but that has begun increasing in frequency or developing resistance to drug therapy or other treatments.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·fec·tious dis·ease

, infective disease
a disease resulting from the presence and activity of a microbial agent.
Farlex Partner Medical Dictionary © Farlex 2012

infectious disease

See Infection.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

in·fec·tious dis·ease

, infective disease (in-fek'shŭs di-zēz', in-fek'tiv)
A disease resulting from the presence and activity of a microbial agent.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

in·fec·tious dis·ease

, infective disease (in-fek'shŭs di-zēz', in-fek'tiv)
Disease resulting from the presence and activity of a microbial agent.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about infectious disease

Q. Is psoriasis infectious? Last week I and my friends from high-school went to the pool. One of my friend has psoriasis on his back, and when the lifeguard noticed it he asked him to leave the pool because he has skin disease that may spread to the other people swimming in the pool. We told him it is psoriasis and not some fungus, but he told us that psoriasis is also infectious. Is that true? Can psoriasis infect people who come in touch with people with psoriasis? Can I go swimming with him or should be more cautious?

A. It is right that psoriasis is not a contagious skin condition. But your friend should take care. However keeping skin humid is better for Psoriasis patients as I recently read these tips at

Q. Is leukemia contagious? A friend of mine got leukemia (blood cancer), can I get it from him if he bleeds and I touch the blood? Like HIV I mean.

A. No, you don't have to be afraid, no chance of that. Your friend will need you to pass this terrible illness. So I recommend learning a bit about leukemia so you understand it better and won't avoid your friend.
You can get information on those 2 sites:

Q. Is psoriasis contagious? My wife got psoriasis and I don’t want to get infected…

A. Psoriasis itself, as was written above, isn't contagious, i.e. if someone has psoriasis he or she can't transmit it to you. However, there is a form of psoriasis called psoriasis guttate that is associated with infection of the throat by a bacterium called streptococcus (which is contagious), so in some way it is contagious.

You may read more here:

More discussions about infectious disease
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References in periodicals archive ?
- A look at the government regulations pertaining to drug developments for communicable diseases and pipeline analysis covering ongoing clinical trials and promising forthcoming therapies in late-stage
Furthermore, it includes the rights and duties of patients with communicable diseases; conditions on isolation and quarantine; procedures in dealing with the deaths and those arrive in the country with infections or suspected to be infected of such diseases.
Among communicable diseases, URTI (31.1%) contributed the most followed by gastrointestinal problems (13.6%) and fungal infections (5.6%).
Yazigi asserted that the Ministry is committed to providing medicine for chronic and communicable diseases and ensuring their availability.
He stressed that chronic diseases such as diabetes and hypertension do not increase the risk of contracting communicable diseases, but they can increase the severity of the diseases' complications.
Al-Jadayel pointed out that these communicable diseases are also transmitted by contaminated food or water.
The first five chapters focus on theory that is core to the study of communicable diseases. The content is neither highly detailed nor complex, but rather aims to give the newcomer some insight into the world of epidemiology and the expert a quick refresher.
This textbook by Webber (formerly of the London School of Hygiene and Tropical Medicine, UK) offers coverage of communicable diseases from an epidemiological perspective, focusing on diseases found in tropical and developing countries but also offering coverage of several diseases more common in developed countries.
The ministers' agenda also included regional cooperation in monitoring and surveillance of communicable diseases; non-communicable diseases (cancer, cardiovascular diseases); the sharp growth in chronic diseases in partner countries and strengthening the national health care systems through better management of health care personnel.
Newly emerged and re-emerging communicable diseases threaten the entire global community and extract a heavy human, economic, and social toll on parts of it.
Dr Paweska is head of the Special Pathogens Unit, National Institute for Communicable Diseases, South Africa.

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