An artwork by the French teacher of the man who changed the course of Japanese modern painting has gone on display for the first time in 120 years.

French painter Raphael Collin taught Kuroda Seiki, who is regarded as Japan's father of modern Western-style painting, when Kuroda studied in France in the late 19th century.

A teacher in her 60s at a public junior high school east of Tokyo has been confirmed to be infected with the virus. She showed symptoms of nausea while teaching in Chiba prefecture .

The mayor of Chiba city says the school will be closed until next Wednesday. The teacher has no record of overseas travel in the past 2 weeks and is not known to have been in contact with an infected person.