Health care utilization for pneumonia in young children after routine pneumococcal conjugate vaccine use in the United States.
OBJECTIVE
To estimate the effect of 7-valent pneumococcal conjugate vaccine (PCV7) on rates of pneumonia-related health care utilization and costs in children younger than 2 years.


METHODS
Retrospective population study.


METHODS
Approximately 40 large employers each year, from 1997 to 2004.


METHODS
Enrollees in the MarketScan databases collected by Thomson Medstat.


METHODS
Pneumococcal conjugate vaccine immunization program.


METHODS
Rates of International Classification of Diseases, Ninth Revision-coded hospitalizations and ambulatory visits due to all-cause and pneumococcal pneumonia and their medical expenditures.


RESULTS
Comparing the rates in 2004 with those in the baseline period of 1997 to 1999 among children younger than 2 years, hospitalizations due to all-cause pneumonia declined from 11.5 to 5.5 per 1000 children (52.4% decline; P < .001) and ambulatory visits due to all-cause pneumonia declined from 99.3 to 58.5 per 1000 children (41.1% decline; P < .001). Rates of hospitalizations due to pneumococcal pneumonia declined from 0.6 to 0.3 per 1000 children (57.6% decline; P < .001) and rates of ambulatory visits declined from 1.7 to 0.9 per 1000 children (46.9% decline; P < .001). Projecting from these data to the US population, the total estimated direct medical expenditures for all-cause pneumonia-related hospitalizations and ambulatory visits in young children were reduced from an annual average of $688.2 million during the period of 1997 to 1999 to $376.7 million in 2004 (45.3% decline and approximately $310 million decrease).


CONCLUSIONS
In children younger than 2 years, the age group targeted for vaccination, pneumonia-related health care utilization in a privately insured population declined substantially following PCV7 introduction. These results suggest that PCV7 may play an important role in reducing the burden of pneumonia, resulting in major savings in medical care cost.
Zhou
Fangjun
F
National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, 1600 Clifton Rd NE, Mail Stop E-52, Atlanta, GA 30333, USA. faz1@cdc.gov
Kyaw
Moe H
MH
Shefer
Abigail
A
Winston
Carla A
CA
Nuorti
J Pekka
JP
D000367:Age Factors; D000554:Ambulatory Care Facilities; D002675:Child, Preschool; D005260:Female; D006296:Health Services / Q000191:economics / Q000706:statistics & numerical data*; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D017589:Immunization Programs; D007223:Infant; D007231:Infant, Newborn; D007902:Length of Stay; D008297:Male; D022242:Pneumococcal Vaccines / Q000191:economics*; D011014:Pneumonia / Q000188:drug therapy* / Q000191:economics / Q000517:prevention & control; D012189:Retrospective Studies; D014481:United States
D022242:Pneumococcal Vaccines