what are the main symptoms of influenza?
99298
['fever* or feeling feverish/chills.', 'cough.', 'sore throat.', 'runny or stuffy nose.', 'muscle or body aches.', 'headaches.', 'fatigue (tiredness)', 'some people may have vomiting and diarrhea, though this is more common in children than adults.']
525188
The symptoms of viral pneumonia usually develop over a period of several days. Early symptoms are similar to influenza symptoms: fever, a dry cough, headache, muscle pain, and weakness. Within a day or two, the symptoms typically get worse, with increasing cough, shortness of breath and muscle pain.
824317
Influenza can wreck havoc on the body. The upper respiratory illness can cause people to experience a fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills, fatigue and sometimes diarrhea and vomiting, according to the CDC. It can lead to complications like pneumonia, which can be serious.
736305
['runny nose.', 'sneezing.', 'mild cough.', 'low-grade fever.']
1327122
['Sore throat.', 'Fever.', 'Persistent, dry cough.', 'Increased mucus.', 'Headaches.', 'Chest pain when breathing.', 'Violent cough.', 'Fatigue.']
590318
Conclusions: Influenza A H3N2 infection was more severe than A H1N1 or B in terms of fever, leukopenia, and C-reactive protein. Myalgia and other symptoms such as fever, headache, general malaise and sore throat were equally frequent in influenza A H3N2, A H1N1, and B infections.
395681
Early flu symptoms can extend below the head, throat, and chest. Some strains of the virus can cause diarrhea, nausea, stomach pain, or vomiting.
872434
['a loud, hacking cough that often sounds like “honking”', 'sneezing.', 'runny nose.', 'loss of appetite.', 'lethargy.', 'low fever.']
635479
A fever, headache, and other aches and pains are common with the flu but less so with colds. People who have colds usually have a stuffy nose and sore throat. That's less common when you have the flu. Flu symptoms often hit suddenly, which makes you weaker and weaker.
1286294
Recognizing the signs of the flu fatigue. sudden fever (usually above 100°F [38°C]) scratchy or sore throat. cough.
1318592
Early signs of the flu include: fatigue. sudden fever (usually above 100°F [38°C]) scratchy or sore throat.
599553
Influenza virus C tends to cause mild upper respiratory infections. Cold-like symptoms are associated with the virus including fever (38–40 °C), dry cough, rhinorrhea (nasal discharge), headache, muscle pain, and achiness. The virus may lead to more severe infections such as bronchitis and pneumonia.
149097
['Fever* or feeling feverish/chills.', 'Cough.', 'Sore throat.', 'Runny or stuffy nose.', 'Muscle or body aches.', 'Headaches.', 'Fatigue (tiredness)', 'Some people may have vomiting and diarrhea, though this is more common in children than adults.']
777538
['Runny nose.', 'Decrease in appetite.', 'Coughing.', 'Sneezing.', 'Fever.', 'Wheezing.']
925551
['Cough.', 'Drowsiness.', 'Generalized Weakness.', 'Low Energy.', 'Nosebleed.', 'Throat Irritation.']
202637
['Congested or runny nose.', 'Dry cough.', 'Low-grade fever.', 'Sore throat.', 'Mild headache.']
964325
['Sudden onset of high fever.', 'Headache, muscle aches and joint pain.', 'Cough (usually dry)', 'Chills.', 'Sore throat.', 'Nasal congestion and runny nose.', 'Fatigue.', 'Stomach symptoms such as nausea, vomiting or diarrhea may occur but are more common in children than adults.']