Stability of the Age Distribution of Measles Cases Over Time During Outbreaks in Bangladesh, 2004-2006

Despite recommendations from WHO to conduct measles outbreak response vaccination campaigns based on the age distribution of cases at the beginning of an outbreak, few data exist to specifically examine whether the age distribution of cases remains constant over time in a measles outbreak. This anal...

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Bibliographic Details
Published in:The Journal of infectious diseases 2011-07, Vol.204 (suppl_1), p.S414-S420
Main Authors: Wiesen, Eric, Wannemuehler, Kathleen, Goodson, James L., Anand, Abhijeet, Mach, Ondrej, Thapa, Arun, O'Connor, Patrick, Linayage, Jayantha, Diorditsa, Serguei, Hasan, ASM Mainul, Uzzaman, Sharif, Mondal, Md. Abdul Jalil
Format: Article
Language:English
Subjects:
Adolescent
Age Distribution
Age groups
Bangladesh - epidemiology
Child
Child, Preschool
Disease Outbreaks
Humans
Immunity
Immunization
Infant
Measles
Measles - epidemiology
Measles - prevention & control
Measles Vaccine - administration & dosage
Mortality
Population Surveillance
SOUTH-EAST ASIA REGION
Statistical significance
Surveillance
Time Factors
Vaccination
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Summary:Despite recommendations from WHO to conduct measles outbreak response vaccination campaigns based on the age distribution of cases at the beginning of an outbreak, few data exist to specifically examine whether the age distribution of cases remains constant over time in a measles outbreak. This analysis explores this question with use of measles outbreak surveillance data from Bangladesh from the period 2004-2006. Pearson X² tests were conducted of age distributions over 2 periods during 41 large laboratory-confirmed measles outbreaks. Statistically significant changes in age distribution over time were observed in 24% of the outbreaks. No single pattern was detected in the shifts in age distribution; however, an increase in the proportion of cases occurring among infants
ISSN:0022-1899
1537-6613
DOI:10.1093/infdis/jir146