| Table of contents |
Contents Page
List of tables .........................................................................................................................................................................................................................2
List of figures ........................................................................................................................................................................................................................3
Abbreviations ........................................................................................................................................................................................................................4
Executive summary ..................................................................................................................................................................................................................5
Vaccination coverage ............................................................................................................................................................................................................. ..5
Acknowledgments ....................................................................................................................................................................................................................6
CHAPTER 1 ............................................................................................................................................................................................................................7
INTRODUCTION ......................................................................................................................................................................................................................7
1.1 Background information .........................................................................................................................................................................................................7
1.2 Geographic and demographic context..........................................................................................................................................................................................7
1.3 Previous yellow fever preventive mass vaccination campaigns ............................................................................................................................................................ 8
1.4 Objectives of the Survey .........................................................................................................................................................................................................8
CHAPTER 2 .................................................................................................................................. ............................................................................................9
ORGANISATION OF THE SURVEY .................................................................................................................................................................................................... 9
2.1 Introduction ..................................................................................................................................................................................................................... ...9
2.2 Survey design ...................................................................................................................................................................................................................... 9
2.3 Household listing ...................................................................................................................................................................................................................10
2.4 Survey fieldwork ...................................................................................................................................................................................................................11
2.5 Survey quality assurance .........................................................................................................................................................................................................11
2.6 Data processing and analysis .............................................................................................................. ......................................................................................12
CHAPTER 3 ...............................................................................................................................................................................................................................13
CHARACTERISTICS OF SURVEY RESPONDENTS............................................................................. .......................................................................................................13
CHAPTER 4 ................................................................................................................................................ ...............................................................................17
YELLOW FEVER VACCINATION COVERAGE .......................................................................................................................................................................................... 17
4.1 Proportion of eligible individuals who were at home during the campaign .................................................................... ...............................................................................17
4.2 Sources of information about the campaign ......................................................................................................................................................................................17
4.3 Main reasons for non-vaccination .................................................................................................................. ................................................................................20
4.4 Individuals receiving vaccination before the campaign ...........................................................................................................................................................................23
4.5 Adverse effects following immunisation (AEFI) ....................................................................................................................................................................................25
4.6 Yellow fever vaccination coverage ................................................................................................................. .................................................................................28
4.7 Individuals receiving yellow fever vaccination for the first time ........................................................ .........................................................................................................61
4.8 Life-time yellow fever containing vaccines in children aged 9 to 59 months.....................................................................................................................................................62
4.9 Low coverage enumeration areas .....................................................................................................................................................................................................64
APPENDIX 1....................................................................................................................................................................................................................................66
Location and coverage of enumeration areas ............................................................................................................................................................................................66
Questionnaires ............................................................................................................................................. ..................................................................................70
Household questionnaire ............................................................................................................. .......................................................................................................71
Individual questionnaire .............................................................................................................. .......................................................................................................75
List of tables
Table 2.1: Survey design: Number of households, number of interviews, and response rates, according to residence (unweighted), Nigeria 2019 ......................................................... ...................9
Table 2.2: Distribution of selected EAs and Households by geopolitical zones and states ........................ ........................................................................................................................10
Table 2.3 Distribution of field staff by zones ........................................................................................................... .........................................................................................11
Table 3.1 Household population by age and sex: Percent distribution of the de facto household population by five-year age groups, according to sex Nigeria 2019 ........................................................13
Table 3.2 Results of households interviewed: Eligible households, response rates, according to residence, Nigeria 2019 ............................................................................................................14
Table 3.3 Results of individuals interviewed: Eligible individuals, response rates, according to residence, Nigeria 2019 ..............................................................................................................15
Table 4.1: Proportion of eligible individuals at home: Proportion of eligible individuals at home during the Campaign, Nigeria, 2018. ................................................................................................17
Table 4.2: Sources of information about the campaign: Primary source of information about the campaign by state, residence, age category and gender, Nigeria 2019 ....................................................19
Table 4.3: Reasons for non-vaccination in the campaign, Nigeria 2019 .................................................................................................................................. .....................................21
Table 4.4: Received the vaccine before the campaign, 2019: Proportion of individuals who had received yellow fever vaccine before the campaign by state, age category, gender and residence, Nigeria 2019 ...24
Table 4.5: Adverse reaction following vaccination: Proportion and 95% CI of individuals who developed an adverse reaction following yellow fever vaccination, Nigeria, 2019.............................................26
Table 4.6: Vaccinated During SIA, 2019: Vaccination coverage by source of vaccination information by state, residence, age category and gender, Nigeria 2019 ...........................................................29
Table 4.7: SIA provided individuals first yellow fever dose, 2019: Proportion of individuals that received first yellow fever dose from SIA by state, residence, age category and gender, Nigeria 2019 ...............61
Table 4.8: Lifetime yellow fever doses for children aged 9 to 59 months: Proportion of children who had received 0, 1 and 2 or more doses of yellow fever vaccine by birth cohort, residence and gender in children aged 9 to 59 months ................................................................................................................................................................................................................................ ..63
List of figures
Figure 3.1: Age pyramid showing the proportional representation of individuals in different age groups by gender, Nigeria 2019 ................................................................................................ 14
Figure 3.2 Distribution of household and individual response rates ........................................................... ...............................................................................................................16
Figure 4.1 Yellow fever vaccination coverage and the 95% upper and lower confidence bounds by state, Nigeria 2019 ............................................................................................................ 28
Figure 4.2: Organ pipe plots for Abuja and Plateau showing coverage by enumeration areas, post yellow fever campaign coverage survey, Nigeria 2019.................................................................. ..65
Figure 4.3: Organ pipe plots for Kebbi, Niger and Sokoto states, showing coverage by enumeration areas, post yellow fever campaign coverage survey, Nigeria 2019. ................................................ ..65
Appendix Figure 1: Map showing coverage and location of enumeration areas in the five implementing states .................................................................................................................... 66
Appendix Figure 2: Map of Abuja showing coverage and location of enumeration areas .................................................................................................................................................. 67
Appendix Figure 3: Map of Kebbi state showing coverage and location of enumeration areas ................. ...........................................................................................................................67
Appendix Figure 4: Map of Niger state showing coverage and location of enumeration areas ............................................................................................................................................ 68
Appendix Figure 5: Map of Plateau state showing coverage and location of enumeration areas ............... ...........................................................................................................................68
Appendix Figure 6: Map of Sokoto showing coverage and location of enumeration areas .................................................................................................................................................. 69 |
