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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.
Note: To print large tables and graphs users may have to change their printer settings to landscape and use a small font size.

Number of reported cases of diseases preventable by routine childhood vaccination
-- United States, April 1994 and January-April 1993 and January-April 1994 *
                                                                  No. cases among
                                             Total cases     children aged <5 years +
                            No. cases,      --------------   ------------------------
Disease                     April 1994       1993     1994         1993    1994
Congenital rubella
  syndrome (CRS)                  0             5        3            3       3
Diphtheria                        0             0        0            0       0
Haemophilus influenzae &        106           474      374          161     110
Hepatitis B @                  1103          3935     3682           39      51
Measles                         173           103      272           48      66
Mumps                           146           580      439           99      52
Pertussis                       212           960      991          548     541
Poliomyelitis, paralytic **      --            --       --           --      --
Rubella                          48            65      132           12      11
Tetanus                           3             8       12            0       1
 * Data for 1993 are final and for 1994, provisional.
 + For 1993 and 1994, age data were available for 84% or more cases, except for 1993 age
   data for congenital rubella syndrome (CRS), which were available for 60% of cases.
 & 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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