Week+Two

an impairment of health or a condition of abnormal functioning - [|wordnet.princeton.edu/perl/webwn]
 * What is Disease?**

Disease Chart -

A range of organisms (viruses, bacteria, fungi, protists and parasitic multicellular organisms) as well as a range of environmental factors (radiation, diet, genetic) are capable of causing disease in plants and animals. (Oxford Biology Dictionary, 1998)
 * Causes of Disease?**

In [|medicine], **transmission** is the passing of a [|disease] from an infected individual or group to a previously uninfected individual or group. The microorganisms ([|bacteria] and [|viruses]) that cause disease may be transmitted from one person to another by one or more of the following means: Microorganisms vary widely in the length of time that they can survive outside the human body, and so vary in how they are transmitted. [|http://en.wikipedia.org/wiki/Transmission_(medicine])
 * Transmission of Disease?**
 * droplet contact - coughing or sneezing on another person
 * direct physical contact - touching an infected person, including sexual contact
 * indirect contact - usually by touching [|soil contamination] or a contaminated surface
 * airborne transmission - if the microorganism can remain in the air for long periods
 * fecal-oral transmission - usually from contaminated food or water sources
 * vector borne transmission - carried by insects or other animals

FAQ concerning transmission of disease via microbes - http://microbiology.mtsinai.on.ca/faq/transmission.shtml

Gizmo on Disease Spread - http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=379 Pandemic Game: Be the Disease that Kills Mankind (remember its a game) - http://www.awfulgames.com/games/pandemic/#game
 * Learning Objects and Interactive Game:**


 * Just for Fun** - Ben Lee - Catch my Disease - http://www.youtube.com/watch?v=ofl4HErgcXQ


 * What is a Symptom?**
 * Symptom:** Any subjective evidence of disease. A symptom is a phenomenon that is experienced by an individual. Anxiety, lower back pain, and fatigue are all symptoms. They are sensations only the patient can perceive. In contrast, a sign is objective evidence of disease. A bloody nose is a sign. It is evident to the patient, doctor, nurse, and other observers.


 * What is a Sign?**
 * Sign:** Any objective evidence of disease. A sign can be detected by a person other than the affected individual. Gross blood in the stool is a sign of disease. It can be recognized by the patient, doctor, nurse, or others. In contrast, a symptom is, by its nature, subjective. Abdominal pain is a symptom. It is something only the patient can know.

While **Latent** or **Latency period** may be synonymous, a distinction is sometimes made between **Incubation period** - the period between infection and clinical onset of the disease- and **Latent period** -the time from infection to infectiousness. Which is shorter depends on the disease. A person may be a carrier of a [|disease], such as //[|Streptococcus]// in the [|throat] without exhibiting any symptoms. Depending on the disease, the person may or may not be able to give the disease to others during the incubation period.
 * What is an Incubation Period?**
 * Incubation period**, also called the **latent period** or **latency period**, is the [|time] elapsed between exposure to a [|pathogenic] [|organism], or [|chemical] or [|radiation], and when [|symptoms] and signs are first apparent. The period may be as short as minutes, to as long as thirty years in the case of variant [|Creutzfeldt-Jakob disease].

For many conditions, incubation periods are longer in adults than they are in children or infants. Sniffes and Sneezes Movie produced in 1955 - still has been good ideas for today. media type="custom" key="245153"
 * ~ Disease ||~ Incubation period ||~ Reference ||
 * [|Cellulitis] caused by [|Pasteurella multocida] || less than 1 day || [|[1]] ||
 * [|Cholera] || 1-3 days || [|[2]] ||
 * [|Influenza] || 1-4 days || [|[3]] ||
 * [|Scarlet fever] || 1-4 days || [|[4]] ||
 * [|Common cold] || 2-5 days || [|[5]] ||
 * [|Ebola] || 2-21 days ||  ||
 * [|Rocky Mountain spotted fever] || 2-14 days || [|[6]] ||
 * [|SARS] || up to 10 days || [|[7]] ||
 * [|Roseola] || 5-15 days || [|[8]] ||
 * [|Polio] || 7-14 days || [|[9]] ||
 * [|Pertussis] || 7-14 days || [|[10]] ||
 * [|Measles] || 9-12 days || [|[11]] ||
 * [|Smallpox] || 7-17 days || [|[12]] ||
 * Generalized [|tetanus] || 7-21 days || [|[13]] ||
 * [|Chicken pox] || 14-16 days || [|[14]] ||
 * [|Erythema infectiosum] ([|Fifth Disease]) || 13-18 days || [|[15]] ||
 * [|Mumps] || 14-18 days || [|[16]] ||
 * [|Rubella] ([|German measles]) || 14-21 days || [|[17]] ||
 * [|Infectious mononucleosis] || 28-42 days || [|[18]] ||
 * [|Kuru] || mean between 10.3 and 13.2 years || [|[19]] ||