These updates aim to 1) emphasize the importance of the booster dose at age ≥4 years, 2) extend the minimum interval from dose 3 to dose 4 from 4 weeks to 6 months, 3) add a precaution for the use of minimum intervals in the first 6 months of life, and 4) clarify the poliovirus vaccination schedule when specific combination vaccines are used.

The document can be accessed on the internet at http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5830a3.htm?s_cid=mm5830a3_e or through http://www.cdc.gov/mmwr/?s_cid=mmwr_online_e.

Please distribute this important update to colleagues, members, coalitions, and partners who provide immunizations or who have an interest in vaccine administration and also place this information prominently on your website.

Contact Laura Rutledge of my staff for questions regarding recommendations, and Ivette Rodriguez for questions regarding vaccine supply, at 850-245-4342.