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Published in: Emerging Themes in Epidemiology 1/2010

Open Access 01-12-2010 | Analytic perspective

Challenges in measuring measles case fatality ratios in settings without vital registration

Authors: K Lisa Cairns, Robin Nandy, Rebecca F Grais

Published in: Emerging Themes in Epidemiology | Issue 1/2010

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Abstract

Measles, a highly infectious vaccine-preventable viral disease, is potentially fatal. Historically, measles case-fatality ratios (CFRs) have been reported to vary from 0.1% in the developed world to as high as 30% in emergency settings. Estimates of the global burden of mortality from measles, critical to prioritizing measles vaccination among other health interventions, are highly sensitive to the CFR estimates used in modeling; however, due to the lack of reliable, up-to-date data, considerable debate exists as to what CFR estimates are appropriate to use. To determine current measles CFRs in high-burden settings without vital registration we have conducted six retrospective measles mortality studies in such settings. This paper examines the methodological challenges of this work and our solutions to these challenges, including the integration of lessons from retrospective all-cause mortality studies into CFR studies, approaches to laboratory confirmation of outbreaks, and means of obtaining a representative sample of case-patients. Our experiences are relevant to those conducting retrospective CFR studies for measles or other diseases, and to those interested in all-cause mortality studies.
Literature
1.
go back to reference Perry RT, Halsey NA: The clinical significance of measles. J Infect Dis. 2004, 189 (Suppl 1): S4-16. 10.1086/377712CrossRefPubMed Perry RT, Halsey NA: The clinical significance of measles. J Infect Dis. 2004, 189 (Suppl 1): S4-16. 10.1086/377712CrossRefPubMed
2.
go back to reference Cliff A, Haggett P: Smallman-Raynor. Measles. An Historical Geography. Oxford: Blackwell Publishers; 1993, 272-301. Cliff A, Haggett P: Smallman-Raynor. Measles. An Historical Geography. Oxford: Blackwell Publishers; 1993, 272-301.
3.
4.
go back to reference Black FL: Measles. Viral infections of humans: Epidemiology and control. Edited by: Evans AS. New York: Plenum publishing, 3 1989, 451-65.CrossRef Black FL: Measles. Viral infections of humans: Epidemiology and control. Edited by: Evans AS. New York: Plenum publishing, 3 1989, 451-65.CrossRef
5.
go back to reference World Health Organization: Generic protocol for determining measles case fatality rates in a community, either during an epidemic or in a highly endemic area. WHO/EPI/GEN/93.3. World Health Organization: Generic protocol for determining measles case fatality rates in a community, either during an epidemic or in a highly endemic area. WHO/EPI/GEN/93.3.
6.
go back to reference Shears P, Berry AM, Murphy R, et al: Epidemiological assessment of the health and nutrition of Ethiopian refugees in emergency camps in Sudan. BMJ. 1985, 295: 314-18. 10.1136/bmj.295.6593.314CrossRef Shears P, Berry AM, Murphy R, et al: Epidemiological assessment of the health and nutrition of Ethiopian refugees in emergency camps in Sudan. BMJ. 1985, 295: 314-18. 10.1136/bmj.295.6593.314CrossRef
7.
go back to reference Porter JDH, Gastellu-Etchegorry M, Navarre I, et al: Measles outbreaks in the Mozambican refugee camps in Malawi: The continued need for an effective vaccine. Int J Epidemiol. 1990, 19 (4): 1072-77. 10.1093/ije/19.4.1072CrossRefPubMed Porter JDH, Gastellu-Etchegorry M, Navarre I, et al: Measles outbreaks in the Mozambican refugee camps in Malawi: The continued need for an effective vaccine. Int J Epidemiol. 1990, 19 (4): 1072-77. 10.1093/ije/19.4.1072CrossRefPubMed
8.
go back to reference Stein CE, Birmingham M, Kurian M, et al: The global burden of measles in the year 2000 - a model that uses country-specific indicators. J Inf Dis. 2003, 187 (Suppl 1): S8-14. 10.1086/368114CrossRef Stein CE, Birmingham M, Kurian M, et al: The global burden of measles in the year 2000 - a model that uses country-specific indicators. J Inf Dis. 2003, 187 (Suppl 1): S8-14. 10.1086/368114CrossRef
9.
go back to reference Wolfson LJ, Strebel PM, Gacic-Dobo M, Hoekstra EJ, McFarland JW, Hersh BS, Measles Initiative: Has the 2005 measles mortality reduction goal been achieved? A natural history modeling study. Lancet. 2007, 369 (9557): 191-200. 10.1016/S0140-6736(07)60107-XCrossRefPubMed Wolfson LJ, Strebel PM, Gacic-Dobo M, Hoekstra EJ, McFarland JW, Hersh BS, Measles Initiative: Has the 2005 measles mortality reduction goal been achieved? A natural history modeling study. Lancet. 2007, 369 (9557): 191-200. 10.1016/S0140-6736(07)60107-XCrossRefPubMed
10.
go back to reference Wolfson LJ, Grais RF, Luquero FJ, Birmingham ME, Strebel PF: Estimates of Measles Case Fatality Ratios: A Comprehensive Review of Community-Based Studies. Int J Epidemiol. 2009, 38 (1): 192-205. 10.1093/ije/dyn224CrossRefPubMed Wolfson LJ, Grais RF, Luquero FJ, Birmingham ME, Strebel PF: Estimates of Measles Case Fatality Ratios: A Comprehensive Review of Community-Based Studies. Int J Epidemiol. 2009, 38 (1): 192-205. 10.1093/ije/dyn224CrossRefPubMed
11.
go back to reference Barkin RM: Measles mortality: a retrospective look at the vaccine era. Am J Epidemiol. 1975, 102: 341-49.PubMed Barkin RM: Measles mortality: a retrospective look at the vaccine era. Am J Epidemiol. 1975, 102: 341-49.PubMed
12.
go back to reference Aaby P, Bukh J, Lisse IM, et al: Further community studies on the role of overcrowding and intensive exposure on measles mortality. Reviews of infectious diseases. 1988, 10 (2): 474-77.CrossRefPubMed Aaby P, Bukh J, Lisse IM, et al: Further community studies on the role of overcrowding and intensive exposure on measles mortality. Reviews of infectious diseases. 1988, 10 (2): 474-77.CrossRefPubMed
13.
go back to reference Clemens JD, Chakraborty J, et al: Measles vaccination and childhood mortality in rural Bangladesh. Am J Epidemiol. 1988, 128: 1330-39.PubMed Clemens JD, Chakraborty J, et al: Measles vaccination and childhood mortality in rural Bangladesh. Am J Epidemiol. 1988, 128: 1330-39.PubMed
14.
go back to reference Nieberg P, Dibley MJ: Risk factors for fatal measles infections. Int J Epidemiol. 1986, 15: 309-11. 10.1093/ije/15.3.309CrossRef Nieberg P, Dibley MJ: Risk factors for fatal measles infections. Int J Epidemiol. 1986, 15: 309-11. 10.1093/ije/15.3.309CrossRef
15.
go back to reference Kaplan LJ, Daum RS, Smaron M, et al: Severe measles in immunocompromised patients. JAMA. 1992, 267: 1237-41. 10.1001/jama.267.9.1237CrossRefPubMed Kaplan LJ, Daum RS, Smaron M, et al: Severe measles in immunocompromised patients. JAMA. 1992, 267: 1237-41. 10.1001/jama.267.9.1237CrossRefPubMed
16.
go back to reference D'Souza RM, D'Souza R: Vitamin A for treating in children (Cochrane Review). The Cochrane Library. Oxford: Update Software, 2003, 3. D'Souza RM, D'Souza R: Vitamin A for treating in children (Cochrane Review). The Cochrane Library. Oxford: Update Software, 2003, 3.
17.
go back to reference Barclay AJG, Foster A, Sommer A: Vitamin A supplements and mortality related to measles: a randomized clinical trial. BMJ. 1987, 282: 294-6. 10.1136/bmj.294.6567.294CrossRef Barclay AJG, Foster A, Sommer A: Vitamin A supplements and mortality related to measles: a randomized clinical trial. BMJ. 1987, 282: 294-6. 10.1136/bmj.294.6567.294CrossRef
18.
go back to reference Fawzi WW, Chalmers TC, Herrera G, et al: Vitamin A supplementation and child mortality - A meta-analysis. JAMA. 1993, 269 (7): 898-903. 10.1001/jama.269.7.898CrossRefPubMed Fawzi WW, Chalmers TC, Herrera G, et al: Vitamin A supplementation and child mortality - A meta-analysis. JAMA. 1993, 269 (7): 898-903. 10.1001/jama.269.7.898CrossRefPubMed
19.
go back to reference World Health Organization: EPI Program Report, Geneva. 1993. World Health Organization: EPI Program Report, Geneva. 1993.
20.
go back to reference Gove S: Integrated management of childhood illness by outpatient health workers: technical basis and overview. Bull World Health Organ. 1997, 75S1: S7-24. Gove S: Integrated management of childhood illness by outpatient health workers: technical basis and overview. Bull World Health Organ. 1997, 75S1: S7-24.
21.
go back to reference Nandy R, Handzel T, Zaneidou M, et al: Case fatality during a measles outbreak in Eastern Niger, 2003. Clin Infect Dis. 2006, 42 (3): 322-8. 10.1086/499240CrossRefPubMed Nandy R, Handzel T, Zaneidou M, et al: Case fatality during a measles outbreak in Eastern Niger, 2003. Clin Infect Dis. 2006, 42 (3): 322-8. 10.1086/499240CrossRefPubMed
22.
go back to reference Coronado F, Musa N, El Tayeb EA, Haithami S, Dabbagh A, Mahoney F, Nandy R, Cairns L: Retrospective measles outbreak investigation - Sudan 2004. J Trop Ped. 2006, 52 (5): 329-334. 10.1093/tropej/fml026CrossRef Coronado F, Musa N, El Tayeb EA, Haithami S, Dabbagh A, Mahoney F, Nandy R, Cairns L: Retrospective measles outbreak investigation - Sudan 2004. J Trop Ped. 2006, 52 (5): 329-334. 10.1093/tropej/fml026CrossRef
23.
go back to reference McMorrow ML, Gebremedhin G, Van den Heever J, Kezaala R, Harris BN, Nandy R, Strebel P, Jack A, Cairns KL: Measles outbreak in South Africa, 2003-2005. S Afr Med J. 2009, 99 (5): 314-9.PubMed McMorrow ML, Gebremedhin G, Van den Heever J, Kezaala R, Harris BN, Nandy R, Strebel P, Jack A, Cairns KL: Measles outbreak in South Africa, 2003-2005. S Afr Med J. 2009, 99 (5): 314-9.PubMed
24.
go back to reference Grais RF, Dubray C, Gerstl S, Guthmann JP, Djibo A, Nargaye KD, Coker J, Alberti KP, Cochet A, Ihekweazu C, Nathan N, Payne L, Porten K, Sauvageot D, Schimmer B, Fermon F, Burny ME, Hersh BS, Guerin PJ: Unacceptably high mortality related to measles epidemics in Niger, Nigeria, and Chad. PLoS Med. 2007, 4 (1): e16. 10.1371/journal.pmed.0040016PubMedCentralCrossRefPubMed Grais RF, Dubray C, Gerstl S, Guthmann JP, Djibo A, Nargaye KD, Coker J, Alberti KP, Cochet A, Ihekweazu C, Nathan N, Payne L, Porten K, Sauvageot D, Schimmer B, Fermon F, Burny ME, Hersh BS, Guerin PJ: Unacceptably high mortality related to measles epidemics in Niger, Nigeria, and Chad. PLoS Med. 2007, 4 (1): e16. 10.1371/journal.pmed.0040016PubMedCentralCrossRefPubMed
25.
go back to reference Black RE, Morris SS, Bryce J: Where and why are 10 million children dying every year?. Lancet. 2003, 361: 2226-34. 10.1016/S0140-6736(03)13779-8CrossRefPubMed Black RE, Morris SS, Bryce J: Where and why are 10 million children dying every year?. Lancet. 2003, 361: 2226-34. 10.1016/S0140-6736(03)13779-8CrossRefPubMed
26.
go back to reference Morris SS, Black RE, Tomaskovic L: Predicting the distribution of under-five deaths by cause in countries without adequate vital registration systems. Int J Epidemiol. 2003, 32: 1041-51. 10.1093/ije/dyg241CrossRefPubMed Morris SS, Black RE, Tomaskovic L: Predicting the distribution of under-five deaths by cause in countries without adequate vital registration systems. Int J Epidemiol. 2003, 32: 1041-51. 10.1093/ije/dyg241CrossRefPubMed
27.
go back to reference Stein CE, Birmingham M, Kurian M, et al: The global burden of measles in the year 2000 - a model that uses country-specific indicators. J Inf Dis. 2003, 187 (Suppl 1): S8-14. 10.1086/368114CrossRef Stein CE, Birmingham M, Kurian M, et al: The global burden of measles in the year 2000 - a model that uses country-specific indicators. J Inf Dis. 2003, 187 (Suppl 1): S8-14. 10.1086/368114CrossRef
28.
go back to reference Joshi A, Luman E, Nandy R, Subedi B, Liyanage J, Wierzba T: Measles deaths in Nepal: estimating the national case-fatality ratio. Bull World Health Organ. 2009, 87: 456-465/. 10.2471/BLT.07.050427PubMedCentralCrossRefPubMed Joshi A, Luman E, Nandy R, Subedi B, Liyanage J, Wierzba T: Measles deaths in Nepal: estimating the national case-fatality ratio. Bull World Health Organ. 2009, 87: 456-465/. 10.2471/BLT.07.050427PubMedCentralCrossRefPubMed
29.
go back to reference Brown V, Checchi F, Depoortere E, Grais RF, Greenough PG, Hardy C, Moren A, Richardson L, Rose AM, Soleman N, Spiegel PB, Sullivan KM, Tatay M, Woodruff BA: Wanted: studies on mortality estimation methods for humanitarian emergencies, suggestions for future research. Emerg Themes Epidemiol. 2007, 1;4 (1): 9. Brown V, Checchi F, Depoortere E, Grais RF, Greenough PG, Hardy C, Moren A, Richardson L, Rose AM, Soleman N, Spiegel PB, Sullivan KM, Tatay M, Woodruff BA: Wanted: studies on mortality estimation methods for humanitarian emergencies, suggestions for future research. Emerg Themes Epidemiol. 2007, 1;4 (1): 9.
30.
go back to reference A manual: Measuring and interpreting malnutrition and mortality: A manual: Measuring and interpreting malnutrition and mortality. WFP: Rome 2005. A manual: Measuring and interpreting malnutrition and mortality: A manual: Measuring and interpreting malnutrition and mortality. WFP: Rome 2005.
31.
go back to reference Tabutin D: Comparison of single and multi-round surveys for measuring mortality in developing countries. Methodologies for the collection and analysis of mortality data. Proceedings of a seminar at Dakar, Senegal; July 7-10, 1981 IUSSP, Liege: Ordina EditionsVallin J, Pollard JH, Heligman L. 1984, 12. Tabutin D: Comparison of single and multi-round surveys for measuring mortality in developing countries. Methodologies for the collection and analysis of mortality data. Proceedings of a seminar at Dakar, Senegal; July 7-10, 1981 IUSSP, Liege: Ordina EditionsVallin J, Pollard JH, Heligman L. 1984, 12.
32.
go back to reference Blacker JGC: Experiences in the use of special mortality questions in multi-purpose surveys: the single round approach. Data bases for mortality measurement. Population Studies No 84, New York, United Nations; 1984, 80. Blacker JGC: Experiences in the use of special mortality questions in multi-purpose surveys: the single round approach. Data bases for mortality measurement. Population Studies No 84, New York, United Nations; 1984, 80.
33.
go back to reference Hill AG, David PH: Monitoring changes in child mortality: new methods for use in developing countries. Health Policy Plan. 1988, 3 (3): 214-226. 10.1093/heapol/3.3.214CrossRef Hill AG, David PH: Monitoring changes in child mortality: new methods for use in developing countries. Health Policy Plan. 1988, 3 (3): 214-226. 10.1093/heapol/3.3.214CrossRef
34.
go back to reference David PH, Bisharat L, Hill AG: Measuring childhood mortality: a guide for simple surveys. UNICEF, Amman, Jordan 1990, ISBN 92-806-0000-2. David PH, Bisharat L, Hill AG: Measuring childhood mortality: a guide for simple surveys. UNICEF, Amman, Jordan 1990, ISBN 92-806-0000-2.
36.
go back to reference Rutenberg N, Sullivan J: Direct and indirect estimates of maternal mortality from the sisterhood method. Proceedings of the Demographic and Health Surveys World Conference 1991 Aug 5-7. Washington DC. 1969, III. Rutenberg N, Sullivan J: Direct and indirect estimates of maternal mortality from the sisterhood method. Proceedings of the Demographic and Health Surveys World Conference 1991 Aug 5-7. Washington DC. 1969, III.
37.
go back to reference Helfand RF, Heath JL, Anderson LJ, et al: Diagnosis of measles with an IgM capture EIA: the optimal timing of specimen collection after rash onset. J Inf Dis. 1997, 175: 195-9.CrossRef Helfand RF, Heath JL, Anderson LJ, et al: Diagnosis of measles with an IgM capture EIA: the optimal timing of specimen collection after rash onset. J Inf Dis. 1997, 175: 195-9.CrossRef
38.
go back to reference Featherstone D, Brown D, Sanders R: Development of the Global Measles Network. J Inf Dis. 2003, 187 (Suppl 1): S264-9. 10.1086/368054CrossRef Featherstone D, Brown D, Sanders R: Development of the Global Measles Network. J Inf Dis. 2003, 187 (Suppl 1): S264-9. 10.1086/368054CrossRef
39.
go back to reference Centers for Disease Control and Prevention: Global measles and rubella laboratory network, January 2004 - June 2005. MMWR. 2005, 54 (43): 1100-4. Centers for Disease Control and Prevention: Global measles and rubella laboratory network, January 2004 - June 2005. MMWR. 2005, 54 (43): 1100-4.
40.
go back to reference Yameogo KR, Perry RT, Yameogo A, Kambire C, Konde MK, Nshimirimana D, Kezaala R, Hersh BS, Cairns KL, Strebel P: Migration as a risk factor for measles after a mass vaccination campaign, Burkina Faso, 2002. Int J Epidemiol. 2005, 34 (3): 556-64. 10.1093/ije/dyi001CrossRefPubMed Yameogo KR, Perry RT, Yameogo A, Kambire C, Konde MK, Nshimirimana D, Kezaala R, Hersh BS, Cairns KL, Strebel P: Migration as a risk factor for measles after a mass vaccination campaign, Burkina Faso, 2002. Int J Epidemiol. 2005, 34 (3): 556-64. 10.1093/ije/dyi001CrossRefPubMed
41.
go back to reference World Health Organization: Response to measles outbreaks in measles mortality reduction settings. WHO Geneva, WHO/IVB/09.03. World Health Organization: Response to measles outbreaks in measles mortality reduction settings. WHO Geneva, WHO/IVB/09.03.
42.
go back to reference Dietz V, Rota J, et al: The laboratory confirmation of suspected measles cases in setting of low measles transmission: conclusions from the experience in the Americas. Bull World Health Organ. 2004, 82 (11): 852-7.PubMedCentralPubMed Dietz V, Rota J, et al: The laboratory confirmation of suspected measles cases in setting of low measles transmission: conclusions from the experience in the Americas. Bull World Health Organ. 2004, 82 (11): 852-7.PubMedCentralPubMed
43.
go back to reference Chandromohan D, Maude GH, Rodrigues LC, Hayes RJ: Verbal autopsies for adult deaths: issues in their development and validation. Int J Epidemiology. 1994, 23 (2): 213-222. 10.1093/ije/23.2.213CrossRef Chandromohan D, Maude GH, Rodrigues LC, Hayes RJ: Verbal autopsies for adult deaths: issues in their development and validation. Int J Epidemiology. 1994, 23 (2): 213-222. 10.1093/ije/23.2.213CrossRef
44.
go back to reference Gray HR, Smith G, Barss P: The use of verbal autopsy methods to determine selected causes of death in children. Baltimore: The Johns Hopkins University School of Hygiene and Public Health. Institute for International Programs, Occasional Paper No 10, 1990. Gray HR, Smith G, Barss P: The use of verbal autopsy methods to determine selected causes of death in children. Baltimore: The Johns Hopkins University School of Hygiene and Public Health. Institute for International Programs, Occasional Paper No 10, 1990.
45.
go back to reference Kalter HD, Gray RH, Black R, et al: Validation of post-mortem interviews to ascertain selected causes of death in children. Int J Epidemiol. 1990, 19: 380-386. 10.1093/ije/19.2.380CrossRefPubMed Kalter HD, Gray RH, Black R, et al: Validation of post-mortem interviews to ascertain selected causes of death in children. Int J Epidemiol. 1990, 19: 380-386. 10.1093/ije/19.2.380CrossRefPubMed
46.
go back to reference Snow R, Armstrong JRM, Forster D, et al: Childhood deaths in Africa: Uses and limitations of verbal autopsies. Lancet. 1992, 340: 351-355. 10.1016/0140-6736(92)91414-4CrossRefPubMed Snow R, Armstrong JRM, Forster D, et al: Childhood deaths in Africa: Uses and limitations of verbal autopsies. Lancet. 1992, 340: 351-355. 10.1016/0140-6736(92)91414-4CrossRefPubMed
47.
go back to reference Mobley CC, Boerma JT, Tituss S, et al: Validation study of verbal autopsy method for causes of childhood mortality in Namibia. J Trop Ped. 1996, 42: 365-369. 10.1093/tropej/42.6.365CrossRef Mobley CC, Boerma JT, Tituss S, et al: Validation study of verbal autopsy method for causes of childhood mortality in Namibia. J Trop Ped. 1996, 42: 365-369. 10.1093/tropej/42.6.365CrossRef
48.
go back to reference World Health Organization: A Standard Verbal Autopsy Method for Investigating Causes of Death in Infants and Children. WHO/CDS/CSR/ISR/99.4. World Health Organization: A Standard Verbal Autopsy Method for Investigating Causes of Death in Infants and Children. WHO/CDS/CSR/ISR/99.4.
49.
go back to reference WHO, Johns Hopkins School of Hygiene and Public Health, The London School of Hygiene and Tropical Medicine: A Standard Verbal Autopsy Method for Investigating Causes of Death in Infants and Children. WHO/CDS/CSR/ISR/99.4. WHO, Johns Hopkins School of Hygiene and Public Health, The London School of Hygiene and Tropical Medicine: A Standard Verbal Autopsy Method for Investigating Causes of Death in Infants and Children. WHO/CDS/CSR/ISR/99.4.
50.
go back to reference Samb B, Aaby P, Whittle H, Seck AM, Simondon F: Decline in measles case fatality ratio after the introduction of measles immunization in rural Senegal. Am J Epidemiol. 1997, 145 (1): 51-57.CrossRefPubMed Samb B, Aaby P, Whittle H, Seck AM, Simondon F: Decline in measles case fatality ratio after the introduction of measles immunization in rural Senegal. Am J Epidemiol. 1997, 145 (1): 51-57.CrossRefPubMed
51.
go back to reference D'Souza RM, D'Souza R: Vitamin A for the treatment of children with measles - A systematic review. J Trop Peds. 2002, 48: 323-7. 10.1093/tropej/48.6.323CrossRef D'Souza RM, D'Souza R: Vitamin A for the treatment of children with measles - A systematic review. J Trop Peds. 2002, 48: 323-7. 10.1093/tropej/48.6.323CrossRef
52.
go back to reference Mausner, Kramer: Epidemiology. An Introductory Text. W.B. Saunders, 2 1985. Mausner, Kramer: Epidemiology. An Introductory Text. W.B. Saunders, 2 1985.
55.
go back to reference Checchi F, Roberts L: Interpreting and Using Mortality Data in Humanitarian Emergencies: A Primer for Non-epidemiologists, Network Paper 52. HPN: London 2005. Checchi F, Roberts L: Interpreting and Using Mortality Data in Humanitarian Emergencies: A Primer for Non-epidemiologists, Network Paper 52. HPN: London 2005.
Metadata
Title
Challenges in measuring measles case fatality ratios in settings without vital registration
Authors
K Lisa Cairns
Robin Nandy
Rebecca F Grais
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Emerging Themes in Epidemiology / Issue 1/2010
Electronic ISSN: 1742-7622
DOI
https://doi.org/10.1186/1742-7622-7-4

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