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Effect of reactive vaccination on meningitis epidemics in Southern Ethiopia

Cuevas, Luis ORCID: https://orcid.org/0000-0002-6581-0587, Savory, E.C., Hart, C. Anthony, Thomson, Madeleine C. and Yassin, Mohammed A. (2007) 'Effect of reactive vaccination on meningitis epidemics in Southern Ethiopia'. Journal of Infection, Vol 55, Issue 5, pp. 425-430.

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Abstract

Objectives: To describe the duration and seasonality of meningitis epidemics in Southern Ethiopia and estimate the proportion of cases prevented by vaccination in order to assess the efficacy of current control strategies.
Methods: A descriptive study of epidemics occurring from 1999 to 2004. The number of cases reported in 24 districts undergoing vaccination campaigns was compared to 36 districts not receiving vaccines or where vaccines had been deployed in the zone.
Results: Sixty epidemics reporting a total of 5806 cases were identified. The duration of the epidemics ranged from 1 to 26 weeks with 45% lasting <= 6 weeks. Forty-one epidemics reached the WHO epidemic threshold. Seventy-one percent of the cases reported from vaccinated areas occurred in the first 6 weeks compared to 62% in unvaccinated areas and 82% for districts where vaccines had been used in the zone.
Conclusions: The majority of epidemics had a short duration limiting the potential to implement current vaccines effectively. Delivering vaccine to areas adjacent to an epidemic seems to increase their efficacy, however the size of this additional area needs to be better defined. (c) 2007 The British Infection Society. Published by Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: meningitis epidemics vaccination ethiopia africa meningococcal meningitis routine vaccination africa disease vaccines risk
Subjects: WA Public Health > Preventive Medicine > WA 115 Immunization
WL Nervous System > WL 200 Meninges. Blood-brain barrier
Faculty: Department: Groups (2002 - 2012) > Child & Reproductive Health Group
Digital Object Identifer (DOI): https://doi.org/10.1016/j.jinf.2007.07.015
Depositing User: Pauline Anderson
Date Deposited: 12 Nov 2010 10:11
Last Modified: 06 Feb 2018 13:01
URI: https://archive.lstmed.ac.uk/id/eprint/1183

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