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Monthly Immunization Table

To track progress toward achieving the goals of the Childhood Immunization Initiative (CII), CDC publishes monthly a tabular summary of the number of cases of all diseases preventable by routine childhood vaccination reported during the previous month and year-to-date (provisional data) (Table_1). In addition, the table compares provisional data with final data for the previous year and highlights the number of reported cases among children aged less than or equal to 5 years, who are the primary focus of CII. Data in the table are derived from CDC's National Notifiable Diseases Surveillance System.
Table_1
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Number of reported cases of diseases preventable by routine childhood vaccination
-- United States,, February 1994 and 1993-1994 *
=====================================================================================================
                                                                  No. cases among
                             No. cases        Total cases     children aged <5 years +
                              February       --------------   ------------------------
Disease                         1994          1993     1994         1993    1994
--------------------------------------------------------------------------------------
Congenital rubella
  syndrome (CRS)                  2             2        2            1       2
Diphtheria                        0             0        0            0       0
Haemophilus influenzae &         91           200      168           71      50
Hepatitis B @                   883          1636     1540           12      33
Measles                          28            52       34           22       7
Mumps                           111           239      179           53      20
Pertussis                       299           472      513          255     308
Poliomyelitis, paralytic **      --            --       --           --      --
Rubella                          34            21       37            7       4
Tetanus                           2             2        3            0       0
--------------------------------------------------------------------------------------
 * Data for 1993 are final and for 1994, provisional.
 + For 1993 and 1994, age data were available for 85% or more cases, except for 1993 CRS,
   which were available for 50% of cases, and 1994 pertussis and tetanus, which were available
   for 84% and 67% of cases, respectively.
 & Invasive disease; H. influenzae serotype is not routinely reported to the National Notifiable
   Diseases Surveillance System.
 @ Because most hepatitis B virus infections among infants and children aged <5 years are
   asymptomatic (although likely to become chronic), acute disease surveillance does not
   reflect the incidence of this problem in this age group or the effectiveness of hepatitis B vac-
   cination in infants.
** No cases of suspected poliomyelitis have been reported in 1994; three cases of suspected
   poliomyelitis have been reported in 1993; four of the five suspected cases with onset in
   1992 were confirmed; the confirmed cases were vaccine associated.
=====================================================================================================

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