3. Seasonal influenza and ‘stomach flu’ are the same thing
Many people confuse these two sicknesses, but they’re different ailments. The influenza strains that circulate every winter affect only the respiratory system (the lungs, nose and throat), causing nasal congestion, sore throat, headache, coughing, a high fever, body aches, and extreme fatigue. Seasonal influenza doesn’t spark diarrhea or abdominal distress. These two symptoms are hallmarks of viral gastroenteritis, an illness that’s often called ‘stomach flu.’ Gastroenteritis doesn’t touch the respiratory system. Instead it targets the intestines and unleashes watery diarrhea, vomiting, stomach cramps, a low-grade fever and headache.