Complex sentence: An act of the United States Congress appended the words "and Prevention" to the name effective October 27,1992; however, Congress directed that the initialism "CDC" be retained because of its name recognition.
Split into simpler sentences: An act of the United States Congress appended the words "and Prevention" to the name effective October 27,1992. However, Congress directed that the initialism "CDC" be retained because of its name recognition.