TABLE 3.

Risk factors of infection with the Streptococcus anginosus group (SAG).

Systemic risk factors	Local risk factors	Environmental risk factors
Inflammation and ulceration of the gingival tissues	dental manipulation	Smoking
Periodontal disease (periodontitis, gingivitis)	Myocardial infarction	Heavy alcohol consumption
Solid tumors	Surgical interventions	Use of drugs
Hematologic malignancies
Type 2 diabetes mellitus
Central Nerve System Diseases (cerebral infarction, cerebral hemorrhage, brain trauma, myasthenia gravis, and Parkinson’s disease)
Chronic kidney failure
Chronic respiratory disease
Heart failure
Liver diseases
Dementia
Viral hepatitis
Peptic ulcer disease