Perhaps Liu Shimei had weaker resistance?
Out of the four people who had close contact with the leprosy patient A'fu, only she had been infected. Liang Yi and the other two were fine.
Although she was wearing gloves, they did not provide effective protection against the bacteria. Moreover, she had prolonged exposure to A'fu's affected areas, making her much more susceptible than the others.
Furthermore, the Nine-Nine Soul-Sucking Needle Formation was very draining on the energy of a needle master. By continuously using several needle formations, her chances of infection increased even more.
Shu Jun was also unaffected.
It was only Liu Shimei who displayed leprosy symptoms. Large lumps started to appear on her body, and her face began to swell, turn red, and emit a faint glow.
