WHO vaccine-preventable diseases: monitoring system. 2020 global summary

Last updated 15-July-2020 (data as of 12-October-2020)
Next overall update End 2020
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Development status: developing GNI / capita (US$): 4'1801 Infant (under 12 months) mortality rate: 142
GDP / capita (US$): 6'7871 Child (under 5 years) mortality rate: 172

Population data in thousands3

  2019  2018  2017  2016  2015  2000  1990  1980 
Total population 197  196  195  195  194  174  163  156 
Births
Surviving infants
Pop. less than 5 years 27  28  28  28  29  26  23  24 
Pop. less than 15 years 75  75  75  75  75  71  66  72 
Female 15-49 years 44  44  44  43  43  39  38  34 

Number of reported cases

(Click for retrospective incidence data for Samoa)
Diphtheria
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Japanese encephalitis
 
Measles***
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  5'687  376 
Mumps
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  50 
Pertussis
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  326  113 
Polio*
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Rubella***
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Rubella (CRS)
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Tetanus (neonatal)
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Tetanus (total)**
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Yellow fever
 
* Polio refers to all polio cases (indigenous or imported), including polio cases caused by vaccine derived polio viruses (VDPV). For disaggregated data please click on this hyperlink: https://extranet.who.int/polis/public/CaseCount.aspx
it does not include cases of vaccine-associated paralytic polio (VAPP) and cases of non polio acute flaccid paralysis [AFP]).
** Neonatal Tetanus and Total Tetanus cases equality may be the result from a lack of non-Neonatal Tetanus surveillance system.
*** For 2019, if a country did not submit a joint reporting form, measles and rubella cases were sourced from data reported through the monthly surveillance data available from:
https://www.who.int/immunization/monitoring_surveillance/burden/vpd/surveillance_type/active/measles_monthlydata/en/

Percentage target population vaccinated by antigen

Hovering over an antigen reveals its fuller definition
  Most recent coverage survey4  

Official country estimates5

  (Click for retrospective coverage estimates data for Samoa)
Vaccine year result method % card seen                                                
BCG 2012  90     67  96  99*  95  82  89  97  97  72 
DTP1 2012  88     67  97  44  97  99*  99*  94 
DTP3 2012  64     67  68  44  90  90  94  99*  90  29 
IPV1          76  46  90  94 
HepB_BD          78  59  95  91  85  99 
HepB3 2012  64     67  68  44  84  90  94  96 
Hib3 2012  64     67  68  44  84  90  94 
JapEnc         
MCV1          96  40  80  77  78  93  89 
MCV2          59  28  78  59  63 
MenA         
PCV1         
PCV2         
PCV3         
Pol3 2012  62     67  68  44  90  90  94  99*  88  29 
Rota1         
RotaC         
RCV1          96  40  80  77  78 
TT2plus 2012  24     67  36  50  99*  70 
PAB          36 
VAD1         
YFV         
* indicates the country reported above 100% coverage.

  Next update: Mid July 2021

WHO-UNICEF estimates6

  (Click for full retrospective WHO-UNICEF coverage estimates data for Samoa)
BCG
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  90  62  83  76  83  97  97  72 
DTP1
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  86  56  84  95  89  99  96  54 
DTP3
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  58  34  74  80  84  98  90  29 
HepB3
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  58  34  74  80  84  93 
HepB_BD
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  65  46  81  78  72  86 
Hib3
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  58  34  74  80  84 
IPV1
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  76  46  81  94 
MCV1
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  87  31  58  68  69  93  89 
MCV2
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  44  13  42  44  48 
PCV3
 
Pol3
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  55  31  71  77  81  98  88  29 
RCV1
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  87  31  58  68  69 
RotaC
 

Click to download WHO-UNICEF coverage estimates data for PAB time series.
Click to download WHO-UNICEF coverage estimates data for HPV time series.

Number of districts in the country 10  Proportion of
districts reporting
DTP3 coverage:
% of coverage reports received at national
level vs number of reports expected
1'180 
   
/
|
|
\
Greater or equal to 90% 20
From 80 to 89% 10
From 50 to 79% 40
Less than 50% 30
Proportion of districts
not reporting DTP3 coverage
0
DTP3 reported coverageDTP3 reported coverage

Immunization Schedule (2019 or latest available)

Hovering over an antigen reveals its fuller definition
Vaccine Schedule Entire country Comment
BCG birth; Yes
DTwP 5 years; Yes
DTwPHibHepB 6, 10, 14 weeks; Yes
HepB_Pediatric birth; Yes
HPV 10 years; Yes From March 2021. 10 - 16 Initial Mass campign
IPV 14 weeks; Yes
MMR 12, 15 months; Yes
OPV 6, 10, 14 weeks; Yes
Pneumo_conj Yes From March 2020
Rotavirus Yes From March 2021
Td 28 weeks; +2, +3 months; +1, +1 year; Yes
Typhoid_conj Yes From April 2020

Immunization indicators

Indicator Expected answer 2019  2018  2017  2016  2015  2014  2013 

Planning and management

Has the country a Multi-Year Plan (MYP) for immunization? Yes/No/NR   Yes  Yes  Yes  Yes  Yes  No 
What years does the MYP cover? number   2'018  2'018  2015-2016  2014-2016  2013-2015   

System performance

Total Nº districts in country number 10  10  10  10  10 
Nº districts with DTP3 coverage >=80% number  
% of districts with DTP3 coverage >=80% From 0 to 100% 40  70  70  80  100   
Nº districts with measles (MCV1) coverage >=95% number  
% of districts with MCV1 coverage >=95% From 0 to 100% 10  20  40  56   

Safety

Has the country a vaccine adverse events review committee? Yes/No/NR/ND No  No  No  Yes      No 
Is there a national system to monitor adverse events following immunization (AEFI)? Yes/No/NR Yes  No    Yes      Yes 

Finance

% of Immunization expenditure financed, using Government funds? From 0 to 100%             100 

National Immunization Advisory Mechanism

Has the country a standing technical advisory group on immunization (NITAG)? Yes/No/NR Yes  No  Yes  Yes  No  Yes  Yes 

Sources

 1  "The 2019 World Bank Development Indicators Online", GDP per capita is PPP adjusted.
 2  UN Inter-agency Group for Child Mortality Estimation (https://childmortality.org/data)  
 3  "United Nations, Population Division. The World Population Prospects - the 2019 revision". New York, 2019.
 4  UNICEF/WHO survey database
 5  If no official estimate is available, the administrative coverage is reported. '*' indicates coverage over 99.5%.
 6  WHO-UNICEF estimates.