"Basic economic theory predicts that a consumer's willingness to pay for a good is affected by the availability of complements and substitutes. In an auction setting, this theory implies that the presence of complements would increase bid prices for a good, while the presence of substitutes...

"Outbreaks of infectious animal diseases represent a major threat to agriculture and can impose significant social and economic costs. The potential for devastating epidemics, such as the recent outbreaks of highly pathogenic avian influenza (HPAI) in Asia, Europe, and Africa, has prompted major...