Erratum: Vol. 65, Nos. 50 & 51.

In the report "Increases in Drug and Opioid-Involved Overdose Deaths - United States, 2010-2015" in both "TABLE 1. Number and age-adjusted rate of drug overdose deaths* involving natural and semisynthetic opioids† and methadone,§,¶ by sex, age group, race/ethnicity,** U.S. Census region, and selected states†† - United States, 2014 and 2015," and in "TABLE 2. Number and age-adjusted rate of drug overdose deaths* involving synthetic opioids other than methadone† and heroin,§,¶ by sex, age group, race/ethnicity,** U.S. Census region, and selected states†† - United States, 2014 and 2015," the seventh footnote (§§) should have read as follows: "Statistically significant at p<0.05 level. Nonoverlapping confidence intervals based on the gamma method were used if the number of deaths was <100 in 2014 or 2015, and z-tests were used if the number of deaths was ≥100 in both 2014 and 2015."