In simple linear regression a single independent variable is used to predict the value of a dependent variable. In multiple linear regression two or more independent variables are used to predict the value of a dependent variable. The difference between the two is the number of independent variables.
Watching for Systemic Symptoms. 1  1. Watch from swollen glands. Serious cases of cellulitis will spread beyond the initially infected region to become systemic and impact the rest of the body. 2  2. Notice if you experience fever and/or chills.
Certain types of bacteria (streptococcus and staphylococcus) enter the soft tissues of the skin through cuts and bruises. Facial cellulitis most commonly occurs in infants aged between 3 months and 2 years or adults older than 50 years of age. This type of infection is not contagious.