Similar outbreaks were reported in Singapore (more than 2,600 cases as of April 20, 2008), Vietnam (2,300 cases, 11 deaths), Mongolia (1,600 cases), and Brunei (1053 cases from June–August 2008) In 2009 17 children died in an outbreak during March and April 2009 in China's eastern Shandong Province, and 18 children died in the neighboring Henan Province.
Wabah serupa dilaporkan di Singapura (lebih dari 2.600 kasus sebagai 20 April 2008), Vietnam (2,300 kasus, 11 meninggal), Mongolia (1,600 kasus), dan Brunei (1053 kasus antara bulan Juni sampai Agustus 2008) 17 anak meninggal dalam suatu wabah di selama bulan Maret dan April 2009 di Provinsi Shandong, China timur dan 18 anak-anak meninggal di Provinsi Henan.