Infectious disease
hideAn 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.
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News tagged with infectious diseases
Cells defend themselves from viruses, bacteria with armor of protein errors
Nov 25, 2009 |
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When cells are confronted with an invading virus or bacteria or exposed to an irritating chemical, they protect themselves by going off their DNA recipe and inserting the wrong amino acid into new proteins to defend them ...
School closure could reduce swine flu transmission by 21 percent
Nov 27, 2009 |
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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 ...
New study finds MRSA on the rise in hospital outpatients
Nov 24, 2009 |
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The community-associated strain of the deadly superbug MRSA -- an infection-causing bacteria resistant to most common antibiotics -- poses a far greater health threat than previously known and is making its way into hospitals, ...
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Surface bacteria maintain skin's healthy balance
Nov 22, 2009 |
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On the skin's surface, bacteria are abundant, diverse and constant, but inflammation is undesirable. Research at the University of California, San Diego School of Medicine now shows that the normal bacteria living on the ...
10 x '20: ID experts call for 10 new antibiotics by 2020
Nov 23, 2009 |
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The Infectious Diseases Society of America (IDSA) has asked for a commitment from the Obama administration and the European Union to further the Society's mission to achieve the development of 10 new antibiotics within the ...
Blocking biofilms: Alzheimer's research sheds light on potential treatments for urinary tract infections
Nov 25, 2009 |
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(PhysOrg.com) -- Research into Alzheimer's disease seems an unlikely approach to yield a better way to fight urinary tract infections (UTIs), but that's what scientists at Washington University School of Medicine in St. Louis ...
UNAIDS: Sex main cause for HIV spreading in China
Medicine & Health / HIV & AIDS
Nov 25, 2009 |
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(AP) -- The virus that causes AIDS is now spreading fastest in China through heterosexual sex, a trend demanding new strategies to stave off a rebound in the epidemic after years of progress in containing ...
CDC warns: Holiday could bring more swine flu
Nov 24, 2009 |
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(AP) -- Let us give thanks - and pass the Purell. Your family might be sharing more than turkey and pumpkin pie this Thanksgiving. Swine flu may also be on the table - and at crowded airports and shopping ...
List of search results for infectious diseases
