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Improved measles surveillance in Cameroon reveals two major dynamic patterns of incidence

Cummings, DAT and Moss, WJ and Long, K and Wiysonge, CS and Muluh, TJ and Kollo, B and Nomo, E and Wolfe, ND and Burke, DS (2006) Improved measles surveillance in Cameroon reveals two major dynamic patterns of incidence. International Journal of Infectious Diseases, 10 (2). 148 - 155. ISSN 1201-9712

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Objective: To characterize the province-specific incidence patterns of measles in Cameroon and determine if an increase in measles incidence during the period January 2000-June 2001 is consistent with coincident epidemics in several regions with different inter-epidemic periods. Method: Periodic behavior of the monthly measles incidence time-series from each province of Cameroon was analyzed using time-series analysis and cluster techniques. Cumulative incidence in each province of Cameroon over a five-year period was associated with birth rates, and vaccination coverage. Results: Distinct patterns of measles incidence were found in two different areas of Cameroon. The three northern-most provinces experience major epidemics every year. Seven southern provinces show evidence of experiencing major epidemics every third year. In January 2000, Cameroon experienced coincident peaks in these two cycles and thus an increase in measles incidence countrywide over the previous year. Higher cumulative province-specific incidence rates were associated with higher birth rates and lower routine vaccination coverage rates. Conclusion: Within one country, two dramatically different dynamic patterns of measles incidence were observed. Long-term surveillance data is crucial to the evaluation of measles immunization campaigns. The availability of a five-year record of measles incidence in Cameroon reveals an interesting dynamic pattern of measles incidence that accounts for the increase in countrywide incidence in 2000-2001. © 2005 International Society for Infectious Diseases. Published by Elsevier Ltd. All rights reserved.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Cummings, DAT
Moss, WJ
Long, K
Wiysonge, CS
Muluh, TJ
Kollo, B
Nomo, E
Wolfe, ND
Burke, DSdonburke@pitt.eduDONBURKE
Centers: Other Centers, Institutes, Offices, or Units > Center for Vaccine Research
Date: 1 March 2006
Date Type: Publication
Journal or Publication Title: International Journal of Infectious Diseases
Volume: 10
Number: 2
Page Range: 148 - 155
DOI or Unique Handle: 10.1016/j.ijid.2004.10.010
Schools and Programs: School of Public Health > Epidemiology
Refereed: Yes
ISSN: 1201-9712
Date Deposited: 07 May 2015 19:23
Last Modified: 02 Feb 2019 16:57


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