Yellow Fever is defined by the Urban Dictionary as: "Western men who have a sexual attraction towards women of Asian descent."
If your a Westerner, and have a strong preference towards Asian women - China, Japan, Philippines - then you definitely have Yellow Fever!
But why?
Asian women are often depicted as being more submissive and feminine, as opposed to their Western counterparts. Asian women are stereotyped to be "Yes" women, fulfilling every desire of the man. This seems to be the biggest advantage Asian women have, and men love it!
American and British girls are high maintenance, and this is where men get turned off! Western women are too demanding and emotional, to the extent that a man is willing to travel to the Far East just to find the "perfect woman".
If you have "yellow fever", i don't blame you. It's better to spend life with a submissive woman, than a moody and emotional women in the West.