Haemophilus Influenzae Type B

A healthy, 10-year-old boy seeks care for a sore left cheek.

Vaccines have such a major impact on both individuals and public health. But somehow, as time has gone by, that has been lost.

A 4-year-old boy comes to your office with a sore right ear. The problem was first noted about 3 days ago with the onset of some minor discomfort.