Abstract: The invention relates to a method for therapy guidance, stratification and/or control in a patient with symptoms of an infectious disease, comprising a prognosis of disease progression, the method comprising: providing a sample from said patient, and determining a level of proADM or fragment(s) thereof in said sample, wherein a low risk level of proADM level or fragment(s) thereof in said sample indicates that the patient is not at risk of a disease progression to a condition that requires hospitalization, wherein said low risk level is preferably equal or below 1.2 nmol/l±20%, and/or wherein a high risk level of proADM level or fragment(s) thereof in said sample indicates that the patient is at risk of a disease progression to a condition that requires hospitalization, wherein said high risk level is preferably above 1.2 nmol/l±20%. The invention further relates to a test kit for carrying out the method.