Table 2.

Description of locations and events involved in the 37-day shipping model period

Day	Location	Events
1	Beijing	Ingredient manufacturing & contamination
2–8	Anquing terminal, Shanghai	Transport to Shanghai, awaiting shipment to US
9–25	Pacific ocean	Departure from China, crossing the ocean
26–32	San Francisco terminal, CA, US	Entry to the US, clearing customs
33–34	Interstate 80	Transport from California to Iowa
35–37	Des Moines, IA	Storage