On Jan 27, Japan announced that it would designate the disease as a "specific infection", which means the medical expenses of all the infected people there, regardless of their nationality, will be covered by the government.

On Jan 28, Japan sent a special plane to Wuhan, Hubei province, the epicenter of the outbreak, to evacuate Japanese nationals. The plane was loaded with urgently needed medical supplies.

On Feb 7, secretaries of the ruling Liberal Democratic Party and the New Komeito Party visited the Chinese embassy in Japan, expressing Japan's willingness to provide China with all assistance.

On Feb 10, the LDP announced funding support, with each LDP member donating 5,000 yen ($45) to China.

Local governments have started to provide "targeted support" to their Chinese sister cities. For example, Oita, the capital of Oita Prefecture, has been providing support to Wuhan. Other cities providing help to sister cities are Tomakomai, to Qinhuangdao, Hebei province; Yurihonjo and Akashi, to Wuxi, Jiangsu province; Mito and Hiroshima, to Chongqing; Kawasaki, to Shenyang, Liaoning province; Hamamatsu, to Hangzhou, Zhejiang province, as well as Shenyang; Hikone, to Xiangtan, Hunan province; Kagoshima, to Changsha, Hunan province; and Satsumasendai, to Changsha. In addition, Hiroshima Prefecture has been providing aid to Sichuan province.