Table 1.

Baseline clinical characteristics of patients.

Case No.	Gender	Age (years)		Current or former smoker		Oral or periodontal diseases		Comorbidities	Use of immunosuppressive agents		Main symptoms
1	M	63		No		Yes		Follicular lymphoma	Chemotherapy		Fever, cough and dyspnea
2	F	29		No		Yes		Kidney transplantation	Corticosteroids and Tacrolimus		Fever and dyspnea
3	F	50		No		No		AML	Chemotherapy		Fever, dyspnea and fatigue
4	M	64		Yes		Yes		DM, HBP	No		Fever, cough and dyspnea
5	M	65		No		No		DM, HBP, CAD	No		Fever, cough and dyspnea
6	M	72		Yes		No		DM, COPD, HBP	No		Cough and dyspnea
7	M	69		No		No		DM, HBP	No		Fever and dyspnea
8	F	68		No		No		DM, HBP, CAD	No		Fever, cough and dyspnea
9	M	74		Yes		Yes		Lung cancer, COPD	Anti-PD-1 monoclonal antibody		Fever and dyspnea
10	M	45		No		Yes		Cerebral hemorrhage	No		Fever and dyspnea
11	M	57		No		No		DM, HBP, CAD	No		Cough and dyspnea
12	M	81		No		No		HBP	No		Fever
13	M	70		Yes		No		Chronic bronchitis	No		Cough and dyspnea
14	M	49		No		No		HBP, CVD	No		Fever and cough
15	M	53		Yes		No		HBP, CVD	No		Fever
16	M	75		Yes		No		CAD	No		Cough and dyspnea
17	M	74		Yes		No		COPD	No		Fever, cough and dyspnea

F, female; M, male; AML, acute myeloid leukemia; DM, diabetes mellitus; HBP, high blood pressure; CVD, cerebrovascular disease; CAD, coronary artery disease; COPD, chronic obstructive pulmonary disease; PD-1, programmed cell death protein 1.