By the end of the month (or as early as February), Singapore also experienced an outbreak of the new flu, which peaked in mid-May with 680 deaths. The only National Influenza Center reporting data to the World Health Organization for the southeast-Asian region in 1957 was located in Singapore, and thus the country was the first to notify the WHO on 4 May about an extensive outbreak of the flu which "appeared to have been introduced from Hong Kong". By the end of May, the outbreak had spread across Mainland Southeast Asia and also involved Indonesia, the Philippines, and Japan. In Taiwan, 100,000 were affected by mid-May.
