Officials in Okinawa prefecture have reported additional measles cases that bring the outbreak total to 91 since March. This includes one case reported at a US military facility on the island.


In addition, cases have spread off Okinawa as a Aichi Prefecture ( Honshu Island) teenager was diagnosed with measles following a trip to Okinawa last month.

The outbreak was triggered by an imported case from Taiwan in March.

Symptoms of measles generally begin 7-14 days after a person is exposed to an infected person. A typical case of measles begins with mild to moderate fever, cough, runny nose, red eyes (conjunctivitis), and sore throat.  Three to five days after the start of these symptoms, a red or reddish-brown rash appears, usually starting on a person’s face at the hairline and spreading downward to the entire body. At the time the rash appears, a person’s fever may spike to more than 104 degrees Fahrenheit.

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The rash typically lasts at least a few days and then disappears in the same order. People with measles may be contagious up to 4 days before the rash appears and for four days after the day the rash appears.