Possible Clues:

• Early sickness symptom
• One is gripped by man flu perhaps
• Sound people in the Far East exhibiting ill feeling
• Disquiet
• General illness, unease
• Sickness making mother idle, so we've heard
• Ail in the same way as this ailment
• Uneasiness of some Asians in the audience
• Feeling of physical or mental illness
• All is not well in the East, by the sound of them