SUPPL.ECONQMICS OF FOOD SAFETY 食品安全的经济学
WARM-UP ×Group Discussion 1.What is the main hazard in this case? 2. What is the workflow of US CDC and FDA in this outbreak?Are there any differences for CDC and FDA's priorities? 3. How much economic loss was involved in this case? 4. What's the impact difference between GAP vs. non-GAP farmers? 5. Why should we choose GAPs?Why not?
Group Discussion 1. What is the main hazard in this case? 2. What is the workflow of US CDC and FDA in this outbreak? Are there any differences for CDC and FDA’s priorities? 3. How much economic loss was involved in this case? 4. What’s the impact difference between GAP vs. non-GAP farmers? 5. Why should we choose GAPs? Why not?
A CASE STUDY:GREEN QNIONS AND HEPATITIS A Figure 1 Annual shipments of green onions to the U.S.market1 Million cwt 3.5 3.0 ☐United States ☐Mexico 2.5 2.0 1.5 1.0 0.5 0 1978 81 84 87 9093 96 99 2002 1In 2003,other green onions from Canada and Guatemala totaled less than 1 percent of shipments. Source:Fresh Fruit and Vegetable Shipments.Agricultural Marketing Service,USDA
Figure 2 Monthly shipments of green onions to the U.S.market,20021 1,000cwt 350 300- ☐United States■Mexico 250 200- 150 100 50- 0- Jan.Feb.Mar.Apr.May Jun.Jul.Aug.Sep.Oct.Nov.Dec. 1This figure presents monthly shipments for 2002,the last year before the food safety outbreaks. Source:Fresh Fruit and Vegetable Shipments:By Commodities,States,and Months. Agricultural Marketing Service,USDA
Figure 3 Green onion production areas in Baja California and Sonora,Mexico San Diego Mexicali Sonora Mexico Baja California ●Winter Production ●Summer Production Source:Economic Research Service,USDA