C1324 Hereditary Dwarfism

Lee Yifann's words stunned Paula. She subconsciously wanted to say that every time the flu broke out, they would produce a vaccine and then finish treating it.

Healing.

However, she vaguely felt that there was a trap in Lee Yifann's words, so she didn't answer immediately.

Seeing this, Lee Yifann continued, "My guess is, since ancient times, all influenza viruses only have one ancestor