highly significantP < 0.001
pneumoniae (PSSP) and PNSP, while 98.82% of PNSP and 84.13% of PSSP had T371A (Thr→Ala) or S (Thr→Ser) substitutions in the STMK motif, a difference that was statistically highly significant ( P < 0.001, Fisher’s exact test).