Chapter 333: Test Subject No. 2

The Fortress Company's upper echelons secretly and expensively hired mercenaries to enter the quarantine zone and acquire serum from Blood Heart. In the end, half of the citizens in Leimeng Town were sheltered and injected with serum, while the other half turned into zombies.

Each refuge had a different research direction. The Leimeng refuge's research focused on coexisting with the virus, akin to genetic vaccines. By adding a virus sequence to human genes, the body could become immune to the virus. Similar to the hepatitis B vaccine, after vaccination, some people could produce antibodies, while others couldn't.