  I use the quasi-natural experiment of the 2018 African swine fever (ASF)
outbreak in China to analyze swine exporters' reaction to a foreign market's
positive demand shock. I use the universe of Spanish firms' export transactions
to China and other countries, and compare the performance of swine and other
exporters before and after the ASF. The ASF increased Spanish swine exporters'
sales to China three times. Swine exporters did not increase exported product
portfolio or export revenue concentration in their best-performing products in
China after the ASF. The increase in exports to China positively impacted
export revenue and survival in third markets. This positive impact was
especially intense for small swine exporters.
