- patients with hospitalization criteria (moderate or severe symptoms) - vulnerable populations such as pregnant, lactating, - patients with recent medical diagnosis (≤ 1 month) of pneumonia - patients with hyposialia - patients with consumption of oral antiseptics (in the form of mouthwash containing cpc, povidone iodine rinses, alcohol mouthwash and essential oils) and toothpastes with cpc during the last month. - patients with cognitive impairment

- patients with hospitalization criteria (moderate or severe symptoms) - vulnerable populations such as pregnant, lactating, - patients with recent medical diagnosis (≤ 1 month) of pneumonia - patients with hyposialia - patients with consumption of oral antiseptics (in the form of mouthwash containing cpc, povidone iodine rinses, alcohol mouthwash and essential oils) and toothpastes with cpc during the last month. - patients with cognitive impairment