There are a variety of speech-related symptoms that can be associated with apraxia, including: Difficulty stringing syllables together in the appropriate order to make words, or inability to do so. Minimal babbling during infancy. Difficulty saying long or complex words.
1 Understand that hepatitis B vaccination-induced protective antibodies can last for up to 15 years, but appear to fall off over time.
Action Points. 1  Understand that hepatitis B vaccination-induced protective antibodies can last for up to 15 years, but appear to fall off over time. 2  Patients who were vaccinated 10 to 15 years ago, especially those who were vaccinated as children, may not be adequately protected.