Why are there more than 2 million doses of African swine fever vaccine in stock?

Diseases are still "emerging" in localities, especially African swine fever, but businesses are stockpiling more than 2 million doses of vaccine.

• Enterprises propose to export African swine fever vaccine
• Vietnam supports vaccines to help Dominica and the Philippines prevent African swine fever
• Second vaccine to prevent African swine fever is about to hit the market
• Vietnam is the first country in the world to produce African swine fever vaccine.

Source: https://www.sggp.org.vn/ton-kho-hon-2-trieu-lieu-vaccine-ta-heo-chau-phi-vi-sao-post712618.html