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$): 1 Infant (under 12 months) mortality rate: 142
GDP / capita (US$): 1 Child (under 5 years) mortality rate: 162

Population data in thousands3

  2019  2018  2017  2016  2015  2000  1990  1980 
Total population 104  103  102  101  101  98  95  93 
Births
Surviving infants
Pop. less than 5 years 12  12  12  13  13  13  13  13 
Pop. less than 15 years 37  37  36  37  37  38  37  39 
Female 15-49 years 26  26  26  25  25  23  22  21 

Number of reported cases

(Click for retrospective incidence data for Tonga)
Diphtheria
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Japanese encephalitis
 
Measles***
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  659  65  2'336 
Mumps
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Pertussis
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Polio*
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Rubella***
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Rubella (CRS)
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Tetanus (neonatal)
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Tetanus (total)**
ChartChart
 
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 Tonga)
Vaccine year result method % card seen                                                
BCG 2011  89  DHS   48  99  99  99*  91  91  99  99  99 
DTP1 2011  86  DHS   48  99  99*  99*  97  99*  99 
DTP3 2011  66  DHS   48  99*  99  99  96  96  95  94  40 
IPV1          99*  99  99  96  34 
HepB_BD          99  99  99  91  92  99* 
HepB3 2011  66  DHS   48  99*  99  99  96  96  97  94 
Hib3 2011  66  DHS   48  99*  99  99  96  96 
JapEnc         
MCV1          99  99  99  98  99  86 
MCV2          99  99  99  99  99 
MenA         
PCV1          99 
PCV2          99 
PCV3          99 
Pol3 2011  68  DHS   48  99*  99  99  96  96  95  93  20 
Rota1         
RotaC         
RCV1          99  99  98  99 
TT2plus 2011  41  DHS   48  99*  99*  97  99  94  65 
PAB         
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 Tonga)
BCG
ChartChart
  99  99  99  91  91  99  99  99 
DTP1
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  99  99  99  97  99  99  97  65 
DTP3
ChartChart
  99  99  99  96  96  95  94  40 
HepB3
ChartChart
  99  99  99  96  96  97  94 
HepB_BD
ChartChart
  99  99  99  91  92  99 
Hib3
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  99  99  99  96  96 
IPV1
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  99  99  99  96  34 
MCV1
ChartChart
  99  99  99  98  99  95  86 
MCV2
ChartChart
  99  99  99  99  99 
PCV3
 
Pol3
ChartChart
  99  99  99  96  96  95  93  20 
RCV1
ChartChart
  99  99  99  98  99 
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 34  Proportion of
districts reporting
DTP3 coverage:
% of coverage reports received at national
level vs number of reports expected
100 
   
/
|
|
\
Greater or equal to 90% 15
From 80 to 89% 0
From 50 to 79% 0
Less than 50% 0
Proportion of districts
not reporting DTP3 coverage
85
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 18 months; 5 years; Yes 18 months and school entry at Class 1
DTwPHibHepB 6, 10, 14 week: Yes
HepB_Pediatric birth; Yes
IPV 14 weeks; Yes
MR 12, 18 months; Yes
OPV 6, 10, 14 weeks; Yes
Td 17 years; Yes Given to Form 6 students at school as school leavers vaccination

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  No  No  No  No  Yes 
What years does the MYP cover? number 2017-2020  2017 - 2020          2012-2014 

System performance

Total Nº districts in country number  
Nº districts with DTP3 coverage >=80% number    
% of districts with DTP3 coverage >=80% From 0 to 100% 100    100  100      100 
Nº districts with measles (MCV1) coverage >=95% number 34   
% of districts with MCV1 coverage >=95% From 0 to 100% 100  680  100  100      100 

Safety

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

Finance

% of Immunization expenditure financed, using Government funds? From 0 to 100% 90  90         

National Immunization Advisory Mechanism

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