What is Influenza (flu)?
Symptoms of Influenza Influenza will cause patients to have fever, cough, sore throat, runny nose, general bone pain and muscle pain, which are all Common symptoms of upper respiratory tract infection. Some viruses can infect the gastrointestinal tract, causing vomiting, abdominal pain, and diarrhea. Severe infections can also cause viral pneumonia, or bacterial pneumonia caused…