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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 in 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 nationally notifiable diseases preventable by routine
childhood vaccination --United States, October-December 1997 and January-
December 1996 and 1997 *
                                                                               No. cases among
                                  No. cases,         Total cases          children aged <5 years +
                                   October-        January-December            January-December
                                   December      --------------------     ------------------------
Disease                              1997          1996          1997        1996            1997
Congenital rubella
  syndrome                               1            4             6           4               6
Diphtheria                               0            2             5           0               1
Haemophilus influenzae &               246        1,170         1,075         273             245
Hepatitis B @                        2,134       10,637         8,902          93              96
Measles                                 20          549           136         160              54
Mumps                                  184          751           639         158             127
Pertussis                            1,809        7,796         5,729       3,464           2,480
Poliomyelitis, paralytic **              0            5             1           3               1
Rubella                                 28          238           161          18              10
Tetanus                                 14           36            46           0               0
 * Data for 1996 are final; data for 1997 are provisional.
 + For 1996 and 1997, data by age were available for        >=97% cases.
 & Invasive disease; H. influenzae serotype is not routinely reported to the National Notifiable
   Diseases Surveillance System. Of 245 cases in children aged <5 years, serotype was reported
   for 126; of these, 47 were type b, the only serotype of H. influenzae preventable by
 @ 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.
** One case with onset in 1997 has been confirmed; three suspected cases are being
   investigated. One suspected case occurred in a child aged <5 years.

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