A族乙型溶血性链球菌(group A streptococcus pyogens,GAS)是链球菌中致病性最强的一种,广泛存在于自然界、人及动物粪便和健康人的鼻咽部,是急性呼吸道感染尤其是上呼吸道感染的重要细菌病原,可以引起儿童和成人急性咽炎和扁桃体炎,也可引起严重的侵袭性感染如坏死性筋膜炎和 Group A streptococcus pyogens (GAS) is one of the most pathogenic Streptococcus strains widely present in nature, human and animal manure and healthy human nasopharynx, is an acute respiratory infection In particular, an important bacterial pathogen of upper respiratory tract infections can cause acute pharyngitis and tonsillitis in children and adults and can also cause severe invasive infections such as necrotizing fasciitis