Infectious Diseases

It's time we get realistic about addressing HIV

We are in crisis; if we do not mobilize resources for the HIV response right now, we will lose control of the HIV epidemic – these advocacy messages were loud and clear at the International AIDS Conference in Durban last ...

Aug 16, 2016
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Should we stop using alcohol-based hand sanitisers?

They're everywhere in hospitals, travellers' backpacks and the aisles of pharmacies in winter, but do we really need to use alcohol-based hand sanitisers? And what should we make of the marketing claims they're needed to ...

Aug 01, 2016
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Clues in Zika's genome

University of Utah chemists have found that the Zika virus contains genetic structures similar to other viruses in the Flaviviridae family, and that these structures may serve as potential antiviral drug targets.

Aug 12, 2016
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Infectious diseases, also known as contagious diseases or transmissible diseases, and include communicable diseases, comprise clinically evident illness (i.e., characteristic medical signs and/or symptoms of disease) resulting from the infection, presence and growth of pathogenic biological agents in an individual host organism. In certain cases, infectious diseases may be asymptomatic for much or all of their course. Infectious pathogens include some viruses, bacteria, fungi, protozoa, multicellular parasites, and aberrant proteins known as prions. These pathogens are the cause of disease epidemics, in the sense that without the pathogen, no infectious epidemic occurs.

Transmission of pathogen can occur in various ways including physical contact, contaminated food, body fluids, objects, airborne inhalation, or through vector organisms. Infectious diseases that are especially infective are sometimes called contagious and can be easily transmitted by contact with an ill person or their secretions. Infectious diseases with more specialized routes of infection, such as vector transmission or sexual transmission, are usually regarded as contagious but do not require medical quarantine of victims.

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 is not synonymous with an infectious disease, as some infections do not cause illness in a host.

This text uses material from Wikipedia licensed under CC BY-SA

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