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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 nationally notifiable 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 less than 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 nationally notifiable diseases preventable by routine childhood vaccination -- United States,
October-December 1996 and 1995-1996 *
                                                                                                No. cases among children
                                October-December 1996        Total cases January-December     aged <5 years + January-December
                               -----------------------       -----------------------------    ---------------------------------
Disease                            No. cases                    1995             1996            1995            1996
Congenital rubella syndrome                1                       6                2               6               2
Diphtheria                                 0                       0                1               0               0
Haemophilus influenzae &                 321                    1180             1078             290             277
Hepatitis B @                           2666                  10,805           10,167              81              78
Measles                                   39                     310              494             107             114
Mumps                                    167                     906              666             165             142
Pertussis                               2860                    5137             6911            2733            3097
Poliomyelitis, paralytic **                0                       6                1               4               1
Rubella                                   15                     128              210               9              15
Tetanus                                    8                      41               28               2               0
*  Data for 1995 are final and for 1996 are provisional.
+  For 1995 and 1996, age data were available for >=94% of cases, except for 1996 age data for measles, which were
   available for 89% of cases.
&  Invasive disease; H. influenzae serotype is not routinely reported to the National Notifiable Diseases Surveillance System.
   Of 277 cases among children aged <5 years, serotype was reported for 95 cases, and of those, 31 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 vaccination in infants.
** Five suspected cases with onset in 1996 have been reported to date. One additional suspected case with onset in 1995 is
   under investigation.

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