S67resulting in significant productivity losses of their parents. Although the burden of influenza is largely related to complications among elderly people according to international literature, Japanese studies rather highlighted the burden of influenza among children.

A system to physically exercise rhesus monkeys is described, based on their natural capacity to climb. It is composed of an enclosure where a motor‐driven rope is continually going down. The two stage training to this task is easily performed. The total work of each run, evaluated with the weight of the animal and the distance climbed, may be very stable. It was used to provide five sedentary monkeys with daily physical training for five months.