Diseases caused by viruses cannot be treated with antibiotics. Viruses can be eradicated with antiviral drugs. However, some diseases caused by viral infections can also heal itself as long as your immune system is strong. You might already know about this. Then, what are the diseases caused by viruses? Although it requires different treatments, diseases caused by viruses and bacteria can have the same symptoms. You are advised to consult a doctor before buying over-the-counter medicines to treat any infections that affect the body. Symptoms of Disease Caused by Viruses Diseases caused by viruses can show symptoms similar to someone infected with bacteria. Common symptoms of both types of infection include: Cough and sneeze. Viral and bacterial infections can also spread through saliva splashes when coughing and sneezing. Fever. Gag. Diarrhea. Fatigue. Cramps In addition to coughing and sneezing, viral and bacterial infections can also spread through: Contact with an inf