Covid-19 Vaccine Producers Rely on Each Other for Key Ingredients

Covid-19 Vaccine Producers Rely on Each Other for Key Ingredients

Covid-19 Vaccine Producers Rely on Each Other for Key Ingredients

Vaccine makers depend on a web of cross-border supply chains to provide the complex chemicals, fatty acids and glass vials needed for production.

Vaccine makers depend on a web of cross-border supply chains to provide the complex chemicals, fatty acids and glass vials needed for production.

Photo: Agnes Dherbeys/MYOP for The Wall Street Journal