It is not uncommon for a viral upper respiratory infection, such as a
cold, to be present with a fever that lasts for 24 to 48 hours. Fever that
occurs on day 3 or 4 of an upper respiratory infection may be caused by an ear
infection. This is especially true if your child has other symptoms, such as
fussiness, sleeplessness, or decreased appetite.
Because bottle-fed babies are more likely to get ear infections, it is better to breast feed your infant for the first six to 12 months of life, if possible, to prevent ear infections.
Remove as many environmental pollutants from your home as you can, including:
Cleaning fluid and solvents
Also, reduce yours or your child's exposure to people with colds, and control allergies.