What is the most common cause of acute otitis media in children?

The most common cause of acute otitis media in children is indeed an infection caused by Streptococcus pneumoniae. This bacterium is well-known for its role in a variety of infections, including pneumonia, meningitis, and otitis media. Children are particularly susceptible to this type of ear infection due to their anatomy and immune system characteristics.

The Eustachian tube in children is shorter and more horizontal than in adults, making it easier for pathogens to reach the middle ear. Additionally, children often have frequent upper respiratory infections, which can contribute to the development of otitis media by promoting fluid build-up in the Eustachian tube and middle ear space. Streptococcus pneumoniae is a common pathogen in these situations, often following respiratory viral infections that compromise the mucosal barriers.

Other options, while they can contribute to ear infections, are either less common causes or are associated with different types of infections. For example, Haemophilus influenzae can also cause acute otitis media but is not as prevalent as Streptococcus pneumoniae. Respiratory syncytial virus (RSV) primarily causes viral bronchiolitis and is not directly responsible for bacterial otitis media. Mycoplasma pneumoniae is more often associated