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Quarterly Immunization Table

To track progress toward achieving the goals of the Childhood Immunization Initiative (CII), CDC publishes quarterly a tabular summary Table_1 of the number of cases of all diseases preventable by routine childhood vaccination reported during the previous quarter and year-to-date (provisional data). In addition, the table compares provisional data with final data for the previous year and highlights the number of reported cases among children aged <5 years, who are the primary focus of CII. Data in the table are reported through the National Electronic Telecommunications System for Surveillance (NETSS).
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Number of reported cases of diseases preventable by routine childhood vaccination
-- United States, April-June 1996 and 1995-1996 *
                                                                    No. cases among
                                               Total cases      children aged <5 years +
                                No. cases,     January-June          January-June
                                April-June     ------------     ------------------------
Disease                            1996        1995   1996           1995   1996
Congenital rubella
  syndrome                            0           5      1              5      1
Diphtheria                            0           0      1              0      0
Haemophilus influenzae &            279         668    623            175    142
Hepatitis B @                      2410        4917   4468             39     27
Measles                             192         231    259             86     45
Mumps                               176         498    325            100     68
Pertussis                           893        1415   1527            810    742
Poliomyelitis, paralytic **           0           2      0              2      0
Rubella                              55          83     94             10     10
Tetanus                               7          11     10              1      0
 * Data for 1995 and 1996 are provisional.
 + For 1995 and 1996, age data were available for >=93% cases, except for 1996 age data for
   measles, which were available for 81% of cases.
 & Invasive disease; H. influenzae serotype is not routinely reported to the National Notifiable
   Diseases Surveillance System. Of 142 cases among children aged <5 years, serotype was
   reported for 32 cases, and of those, nine were type b, the only serotype of H. influenzae
   preventable by vaccination.
 @ 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.
** Three suspected cases with onset in 1996 have been reported to date. Two cases with onset
   in 1995 have been confirmed; these cases were vaccine-associated. An additional six
   suspected cases are under investigation for 1995. Five cases with onset in 1994 were
   confirmed; all were vaccine-associated.

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