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Measles, also known as morbilli, rubeola or red measles, is a highly contagious infection caused by the measles virus.〔(【引用サイトリンク】url=http://www.health.gov.sk.ca/red-measles )〕 Initial signs and symptoms typically include fever, often greater than , cough, runny nose, and red eyes.〔〔 Two or three days after the start of symptoms, small white spots may form inside the mouth, known as Koplik's spots. A red, flat rash which usually starts on the face and then spreads to the rest of the body typically begins three to five days after the start of symptoms. Symptoms usually develop 10–12 days after exposure to an infected person and last 7–10 days.〔 Complications occur in about 30% and may include diarrhea, blindness, inflammation of the brain, and pneumonia among others.〔〔 Rubella (German measles) and roseola are different diseases. Measles is an airborne disease which spreads easily through the coughs and sneezes of those infected. It may also be spread through contact with saliva or nasal secretions.〔 Nine out of ten people who are not immune who share living space with an infected person will catch it. People are infectious to others from four days before to four days after the start of the rash. People usually do not get the disease more than once.〔 Testing for the virus in suspected cases is important for public health efforts.〔 The measles vaccine is effective at preventing the disease. Vaccination has resulted in a 75% decrease in deaths from measles between 2000 and 2013 with about 85% of children globally being currently vaccinated. No specific treatment is available. Supportive care may improve outcomes.〔 This may include giving oral rehydration solution (slightly sweet and salty fluids), healthy food, and medications to control the fever.〔〔 Antibiotics may be used if a secondary bacterial infection such as pneumonia occurs. Vitamin A supplementation is also recommended in the developing world. Measles affects about 20 million people a year,〔 primarily in the developing areas of Africa and Asia.〔 It causes the most vaccine-preventable deaths of any disease. It resulted in about 96,000 deaths in 2013, down from 545,000 deaths in 1990. In 1980, the disease is estimated to have caused 2.6 million deaths per year.〔 Before immunization in the United States between three and four million cases occurred each year.〔 Most of those who are infected and who die are less than five years old.〔 The risk of death among those infected is usually 0.2%,〔 but may be up to 10% in those who have malnutrition.〔 It is not believed to affect other animals.〔 ==Signs and symptoms== The classic signs and symptoms of measles include four-day fevers (the 4 D's) and the three C's—cough, coryza (head cold, fever, sneezing), and conjunctivitis (red eyes)—along with fever and rashes. Fever is common and typically lasts for about one week; the fever seen with measles is often as high as .〔 Koplik's spots seen inside the mouth are pathognomonic (diagnostic) for measles, but are temporary and therefore rarely seen.〔 Recognizing these spots before a person reaches their maximum infectiousness can help physicians reduce the spread of the disease. The characteristic measles rash is classically described as a generalized red maculopapular rash that begins several days after the fever starts. It starts on the back of the ears and, after a few hours, spreads to the head and neck before spreading to cover most of the body, often causing itching. The measles rash appears two to four days after the initial symptoms and lasts for up to eight days. The rash is said to "stain", changing color from red to dark brown, before disappearing.〔(NHS UK: Symptoms of measles. Last reviewed: 26/01/2010 ).〕 Overall, the disease from infection with the measles virus usually resolves after about three weeks.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Measles」の詳細全文を読む スポンサード リンク
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