Measles – Japan

[Admin]

On 16 May 2018, Japan’s National International Health Regulations Focal Point (NFP) notified WHO of an ongoing outbreak of measles in Japan. On 20 March 2018, a traveller from overseas was diagnosed with measles in Okinawa prefecture, and thereafter additional cases of measles were reported from across the prefecture and later from other prefectures. In light of the situation, on 11 and 26 April 2018, the Ministry of Health, Labour and Welfare (MHLW) circulated two alert notices. The national trend in notifications and reports of new measles cases from Okinawa Prefecture have both declined in recent weeks (onset date of the most recent case in Okinawa was 10 May). Okinawa Prefecture officially declared the outbreak over on 11 June, after four weeks had passed since this last case. This report provides the latest information on the epidemiologic situation of measles in Japan, including outbreak cases in Okinawa Prefecture and the other cases, and indicates the need for continued vigilance.

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