一位8 歲男童因發燒一天住院，住院時之胸部X 光如圖所示，白血球計數13,500/\mathrm{mm}^{3}，白血球分類band 6%, segment 81%, monocyte 4%, lymphocyte 9%, C-reactive protein 1.1 mg/dL。下列那一種感染的可能性最高？
\mathrm{mm}^{3}
Haemophilus influenzae type b
Streptococcus pneumoniae
Group A streptococcus
Staphylococcus aureus
