TOKYO Ė Japanese Emperor Akihito, 83, canceled his schedule for Monday owing to mild fever in the morning, a spokesperson of the Imperial Household Agency said.
The fever could have been caused by the pneumococcal vaccine given to the monarch over the weekend, according to the Royal household.
Akihito was scheduled to attend the death anniversary ceremony of Emperor Komei (1846-1867), but was instead represented by the Royal Household deputy director of protocol.
However, the emperor has not canceled his visit to the retreat villa in Hayama where he will spend five days along with Empress Michiko.
In August, the emperor had expressed his desire to abdicate due to old age and failing health.
However, since Japanís Imperial Household Law, enacted in 1947, only allows for posthumous succession, it will be necessary to amend the existing law to pave the way for his abdication in favor of Crown Prince Naruhito.
Last week, the committee appointed by the Japanese government to manage the abdication, proposed a special legislation applying exclusively to Akihitoís abdication to avoid complications involved in amending the law.
Akihito has been facing health issues after he underwent a surgery for prostate cancer in 2003, and a bypass surgery in 2012.