In December 2011, the Ministry of Health of Cameroon notified WHO of a yellow fever outbreak in the North Region of the country.

On 20 December 2011, the Ministry of Health of Ghana notified WHO of a yellow fever (YF) outbreak occurring in 3 districts; Builsa and Kassena-Nankana-West in the Upper East Region and Kitampo-South in the Brong Ahafo Region located in the mid-western part of the country.

The Ministry of Health of China has notified WHO of a human case of avian influenza A (H5N1) virus infection.‬‪

The Ministry of Health (MoH) has announced a confirmed case of human infection with avian influenza A (H5N1) virus.

The Ministry of Health of Indonesia has announced one new confirmed case of human infection with avian influenza A(H5N1) virus.