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Infectious disease

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An infectious disease is a clinically evident disease resulting from the presence of pathogenic microbial agents, including pathogenic viruses, pathogenic bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. These pathogens are able to cause disease in animals and/or plants. Infectious pathologies are usually qualified as contagious diseases (also called communicable diseases) due to their potential of transmission from one person or species to another. Transmission of an infectious disease may occur through one or more of diverse pathways including physical contact with infected individuals. These infecting agents may also be transmitted through liquids, food, body fluids, contaminated objects, airborne inhalation, or through vector-borne spread.

The term infectivity describes the ability of an organism to enter, survive and multiply in the host, while the infectiousness of a disease indicates the comparative ease with which the disease is transmitted to other hosts. An infection however, is not synonymous with an infectious disease, as an infection may not cause important clinical symptoms or impair host function.

For more information about Infectious disease, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.


News tagged with infectious diseases

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Mutation leads to new and severe form of bacterial disease

Medicine & Health / Genetics

created Dec 18, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Everybody gets sick, but how sick you get is in your genes. New research now reveals a mutation on a gene that makes children susceptible to a severe form of mycobacterial disease. The work not only supports ...


Transplant guide highlights daily infection risks from factors like pets and food

Medicine & Health / Other

created Dec 18, 2009 | popularity not rated yet | comments 0

Keeping pets healthy can reduce infection risks for people who have received solid organ transplants and veterinarians should be seen as an integral part of the healthcare team. That's just one of the key pieces of advice ...


Santa should get off his sleigh and walk, says public health doctor

Medicine & Health / Health

created Dec 16, 2009 | popularity 4 / 5 (1) | comments 2

Santa should share Rudolf's snack of carrots and celery sticks rather than brandy and mince pies and swap his reindeer for a bike or walk, says a public health expert in the Christmas issue published in BMJ today.


Leprosy susceptibility genes reported

Medicine & Health / Genetics

created Dec 16, 2009 | popularity not rated yet | comments 0

In the first genome-wide association study (GWAS) of leprosy and the largest GWAS on an infectious disease, scientists at the Genome Institute of Singapore (GIS) and 26 institutes in China identified seven genes that increase ...


Further spread of Rhodesian sleeping sickness in Uganda likely due to livestock movements

Medicine & Health / Diseases

created Dec 15, 2009 | popularity not rated yet | comments 0

The northwards spread of human Rhodesian sleeping sickness in Uganda is likely due to the movement of infected livestock, according to new findings from an interdisciplinary research group including members from the Centre ...


Doctors advised to curtail antibiotic dosages

Medicine & Health / Medications

created Dec 11, 2009 | popularity 5 / 5 (2) | comments 1

It's a common scene: Mom brings aching child with some bug to the doctor's office, expecting the doctor to do, well, something.


Think again about keeping little ones so squeaky clean

Medicine & Health / Research

created Dec 08, 2009 | popularity 5 / 5 (15) | comments 5

A new Northwestern University study suggests that American parents should ease up on antibacterial soap and perhaps allow their little ones a romp or two in the mud --- or at least a much better acquaintance with everyday ...


New York autopsies show 2009 H1N1 influenza virus damages entire airway

Medicine & Health / Diseases

created Dec 07, 2009 | popularity not rated yet | comments 0

In fatal cases of 2009 H1N1 influenza, the virus can damage cells throughout the respiratory airway, much like the viruses that caused the 1918 and 1957 influenza pandemics, report researchers from the National Institutes ...


West Nile virus infection may persist in kidneys years after initial infection

Medicine & Health / Diseases

created Dec 07, 2009 | popularity not rated yet | comments 0

A new study shows that people who have been infected with West Nile virus may have persistent virus in their kidneys for years after initial infection, potentially leading to kidney problems. The research, which appears in ...


Chicken pox vaccine reduces shingles risk in kids -- study of 172,000 kids used EHRs

Medicine & Health / Diseases

created Dec 04, 2009 | popularity 5 / 5 (1) | comments 0

Herpes zoster, also known as shingles, is very rare among children who have been vaccinated against chicken pox, according to a Kaiser Permanente study in the December issue of the Pediatric Infectious Diseases Journal.


Species down, disease up: Study shows biodiversity loss drives human infections

Biology / Ecology

created Dec 03, 2009 | popularity not rated yet | comments 1

The extinction of plant and animal species can be likened to emptying a museum of its collection, or dumping a cabinet full of potential medicines into the trash, or replacing every local cuisine with McDonald's burgers.


Transplant infectious disease experts provide pandemic guidance

Medicine & Health / Diseases

created Dec 03, 2009 | popularity 1 / 5 (1) | comments 1

Surgeons and other healthcare professionals specialising in solid organ transplants have been issued with expert advice to guide them through the complex clinical issues posed by the global H1N1 (swine flu) pandemic.


Intensive fungicide use may lead to azole resistance in humans

Intensive fungicide use may lead to azole resistance in humans

Medicine & Health / Diseases

created Dec 01, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- A team of scientists from the Netherlands, including Gert Kema of Plant Research International, published an article in the Lancet Infectious Diseases about the relationship between fungic ...


'Outbreaks Near Me' app now available for Android mobile phones

Technology / Software

created Dec 01, 2009 | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- "Outbreaks Near Me," an up-to-the-minute disease-tracking system released as an iPhone application in September, is now available for use on Android mobile phones, greatly increasing the number of people ...


School closure could reduce swine flu transmission by 21 percent

Medicine & Health / Diseases

created Nov 27, 2009 | popularity not rated yet | comments 0

A survey carried out in eight European countries has shown that closing schools in the event of an infectious disease pandemic could have a significant role in reducing illness transmission. Researchers writing in the open ...