what are the first signs of the flu in toddlers?
['Fever, which may be as high as 103°F (39.4°C) to 105°F (40.5°C)', 'Body aches, which may be severe.', 'Headache.', 'Sore throat.', 'Cough that gets worse.', 'Tiredness.', 'Runny or stuffy nose.']