What Is an Ear Infection?
3. Causes
The majority of ear infections are caused by bacteria; making up around 85% of all cases. The most common culprits include Streptococcus pneumonia, Moraxella, Pseudomonas, and Hemophilus influenza. Viruses are also sometimes responsible for ear infections, although these make up only around 15% of all cases.
As mentioned, ear infections are sometimes caused by a blockage in the Eustachian tubes. This will tend to happen when the patient is ill with another disease that causes inflammation and congestion. This means that even mild diseases like the flu and the common cold will sometimes cause an ear infection. Allergies are also sometimes responsible.
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