Understanding when you're contagious is vital in preventing the spread of illness to others. Respiratory infections such as colds and flu, caused by viruses, are easily transmissible. Bacterial infections can also be highly contagious. Taking precautionary measures upon realizing you're contagious can help curb the spread of the illness.
Useful Guidelines
Identifying Signs of Contagious Illnesses

Checking Your Body Temperature

Assess Your Mucus and Nasal Secretions

Spotting Skin Rashes as Contagious Indicators

Recognize Diarrhea and Low-Grade Fever

Identify Facial Pain as a Contagious Sign

Detect Sore Throat with Runny Nose

Spot Signs of Sleepiness and Appetite Loss
Combining Symptoms for Diagnosis

Recognize Influenza Symptoms

Identify Cold Symptoms

Notice Combined Symptom Patterns

Consider Recent Contact with Sick Individuals

Differentiate Seasonal Allergies from Contagious Illnesses
Preventing Contagious Illness Spread

Receive the Yearly Flu Vaccine

Practice Proper Handwashing

Wash Hands Thoroughly with Soap and Water

Sanitize Hands Using Alcohol Gel

Avoid Close Contact with Ill Individuals

Stay Mindful of Touched Surfaces

Take Measures to Prevent Illness Spread

Stay Isolated at Home to Prevent Spread

Cover Mouth When Coughing or Sneezing

Avoid Sharing Personal Items
Remaining Vigilant About Other Contagious Illnesses

Stay Informed About Various Contagious Diseases

Be Alert to Serious Infections in Your Circles

Identify Contagious Childhood Illnesses
Helpful Tips
Follow Guidelines for Contagious Illnesses in Various Settings