I wish to note two errors in Table 4, page 1582,1 in the number of plague cases reported. In 1971 only two cases were reported rather than 12; neither case died. In 1965, after several revisions, the final case count was 8(2 and CDC Plague Bulletin Number 1, page 2, 1970). Since the annual number of plague cases in the United States is small (1970 was a record year for plague cases from rural sources), the apparent typographical error for 1971 is a serious one. You may also be interested to note also that only one human plague case was reported in 1972.3 Jack D. Poland, MD.