The article “Pneumococcal Conjugate Vaccine for Young Children” (May 15, 2001, page 1991) contained two errors. On page 1992, the last two sentences of the left-hand column should read as follows: “Rates of invasive pneumococcal disease among blacks are about twofold to threefold higher than rates in whites. Rates among Alaskan natives and Native Americans are about threefold to sevenfold higher than rates in whites.”

In addition, in the second sentence of the first whole paragraph in the right column on page 1994, the wrong formulation was used for pertussis vaccine administered at the same time as diphtheria and tetanus toxoids. The correct abbreviation is DTaP. The text should read as follows: “When administered at the same time as diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP) at a separate site, a fever of 38°C (100°F) or higher occurred in 15 to 24 percent of children vaccinated with PCV compared with 9 to 17 percent of those receiving the control vaccine (experimental meningococcal conjugate vaccine).¹⁴”