How does streptococcus bacteria enter the ear?

Otitis. Streptococci may enter the middle ear by travelling up the eustacian tube from the opening into the nasopharynx where these organisms are often resident. If you are asking about the external ear, then they come from the environment and the surface of the skin.

Related Questions

White layered dry skin in head. If removed, it turns into black skin like rashes. 6 month before found and treated streptococcus bacterial infection?

Skin cancer? When a skin lesion fails to heal and not associated with burning or itching, one should get checked for skin cancer. The fact that it was infected 6 months ago might be due to scratching thereby introducing bacteria into the lesion. It is only prudent to see a dermatologist to make sure that it is not a skin cancer. Read more...