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Measles (sometimes known as English Measles) is spread through respiration (contact with fluids from an infected person's nose and mouth, either directly or through aerosol transmission), and is highly contagious—90% of people without immunity sharing living space with an infected person will catch it. The infection has an average incubation period of 14 days (range 6 � 19 days) and infectivity lasts from 2 � 4 days prior, until 2 � 5 days following the onset of the rash (i.e. 4 � 9 days infectivity in total). An alternative name for measles in English-speaking countries is rubeola, which is sometimes confused with rubella (German measles); the diseases are unrelated. |