Data WHO/UNICEF & CDC · 21 October 2026 How grades work · Changelog · Corrections

Open Source Medicine Foundation

Diphtheria by country

Cases to 2025

Reported diphtheria cases and incidence in 217 countries, with a data-quality grade on each series.

← All countries · What diphtheria does and how well the vaccine works

30,205
cases reported to WHO in 2025
sum over 179 reporting countries
217
countries with a series
Sums across countries depend on which countries reported that year, shown beside each total. A fall in the sum can be fewer reports, not fewer cases.

Reported cases worldwide, by year

Sum of reported Diphtheria cases by year with the number of reporting countries
YearReported cases (sum)Countries reporting
200110,725166
20029,035167
20037,154171
200410,069166
20058,138174
20064,333160
20074,642175
20084,978166
20094,349173
20104,603174
20115,626171
20124,490171
20134,680163
20147,774144
20154,535151
20167,102151
20178,819172
201816,911183
201922,989168
202010,137156
20218,659162
202210,027172
202324,782178
202425,147184
202530,205179

By country, latest report

Sorted by incidence rate (per 1,000,000 total population). Hover or focus a grade for its reason.

Diphtheria reported cases and incidence by country
CountryReported casesRate (per 1,000,000 total population)Trend since 2000Data quality
MauritaniaAfrica1,2732025239.5Mauritania Diphtheria: 2003 to 2025, latest 1273 in 2025, lowest 0, highest 1273.B · good
SomaliaEastern Mediterranean3,6222025184.3Somalia Diphtheria: 2012 to 2025, latest 3622 in 2025, lowest 0, highest 3622.C · weak
NigeriaAfrica15,273202564.3Nigeria Diphtheria: 2000 to 2025, latest 15273 in 2025, lowest 0, highest 15273.C · weak
NigerAfrica1,592202557Niger Diphtheria: 2000 to 2025, latest 1592 in 2025, lowest 0, highest 3286.A · strong
YemenEastern Mediterranean1,447202534.6Yemen Diphtheria: 2004 to 2025, latest 1447 in 2025, lowest 0, highest 2609.B · good
MaliAfrica712202528.3Mali Diphtheria: 2004 to 2025, latest 712 in 2025, lowest 0, highest 712.C · weak
AlgeriaAfrica775202516.3Algeria Diphtheria: 2001 to 2025, latest 775 in 2025, lowest 0, highest 775.B · good
Central African RepublicAfrica66202512Central African Republic Diphtheria: 2000 to 2025, latest 66 in 2025, lowest 0, highest 106.B · good
EswatiniAfrica1120248.9Eswatini Diphtheria: 2000 to 2024, latest 11 in 2024, lowest 0, highest 11.B · good
South SudanAfrica8520237.4South Sudan Diphtheria: 2014 to 2023, latest 85 in 2023, lowest 0, highest 85.D · poor
HaitiAmericas6220255.2Haiti Diphtheria: 2000 to 2025, latest 62 in 2025, lowest 0, highest 105.B · good
GuineaAfrica7220254.8Guinea Diphtheria: 2000 to 2025, latest 72 in 2025, lowest 0, highest 134.C · weak
South AfricaAfrica31420254.8South Africa Diphtheria: 2000 to 2025, latest 314 in 2025, lowest 0, highest 314.B · good
GabonAfrica1020243.9Gabon Diphtheria: 2002 to 2024, latest 10 in 2024, lowest 0, highest 10.D · poor
SudanEastern Mediterranean18620253.6Sudan Diphtheria: 2000 to 2025, latest 186 in 2025, lowest 0, highest 193.B · good
MadagascarAfrica10720253.3Madagascar Diphtheria: 2000 to 2025, latest 107 in 2025, lowest 0, highest 2865.B · good
LuxembourgEurope220252.9Luxembourg Diphtheria: 2000 to 2025, latest 2 in 2025, lowest 0, highest 2.B · good
SwitzerlandEurope2420252.7Switzerland Diphtheria: 2000 to 2025, latest 24 in 2025, lowest 0, highest 128.B · good
NepalSouth-East Asia7020242.4Nepal Diphtheria: 2000 to 2024, latest 70 in 2024, lowest 0, highest 1079.B · good
IndiaSouth-East Asia3,24920252.2India Diphtheria: 2000 to 2025, latest 3249 in 2025, lowest 1768, highest 9622.A · strong
PakistanEastern Mediterranean56220252.2Pakistan Diphtheria: 2000 to 2025, latest 562 in 2025, lowest 9, highest 1053.A · strong
MyanmarSouth-East Asia10720252Myanmar Diphtheria: 2000 to 2025, latest 107 in 2025, lowest 1, highest 169.A · strong
NamibiaAfrica520241.7Namibia Diphtheria: 2000 to 2024, latest 5 in 2024, lowest 0, highest 5.B · good
BelgiumEurope1820251.5Belgium Diphtheria: 2001 to 2025, latest 18 in 2025, lowest 0, highest 31.A · strong
SlovakiaEurope620251.1Slovakia Diphtheria: 2000 to 2025, latest 6 in 2025, lowest 0, highest 8.A · strong
AustraliaWestern Pacific2620251Australia Diphtheria: 2000 to 2025, latest 26 in 2025, lowest 0, highest 31.A · strong
PhilippinesWestern Pacific11720251Philippines Diphtheria: 2000 to 2025, latest 117 in 2025, lowest 0, highest 205.A · strong
CzechiaEurope1020250.9Czechia Diphtheria: 2000 to 2025, latest 10 in 2025, lowest 0, highest 11.A · strong
IndonesiaWestern Pacific25420250.9Indonesia Diphtheria: 2000 to 2025, latest 254 in 2025, lowest 23, highest 1192.A · strong
New ZealandWestern Pacific420250.8New Zealand Diphtheria: 2000 to 2025, latest 4 in 2025, lowest 0, highest 20.B · good
ThailandSouth-East Asia6020250.8Thailand Diphtheria: 2000 to 2025, latest 60 in 2025, lowest 0, highest 90.B · good
FranceEurope4420250.7France Diphtheria: 2000 to 2025, latest 44 in 2025, lowest 0, highest 60.B · good
GermanyEurope5320250.6Germany Diphtheria: 2000 to 2025, latest 53 in 2025, lowest 0, highest 171.A · strong
MalaysiaWestern Pacific2120250.6Malaysia Diphtheria: 2000 to 2025, latest 21 in 2025, lowest 0, highest 32.A · strong
Democratic Republic of the CongoAfrica6120250.5Democratic Republic of the Congo Diphtheria: 2000 to 2025, latest 61 in 2025, lowest 0, highest 61.C · weak
KenyaAfrica2720240.5Kenya Diphtheria: 2000 to 2024, latest 27 in 2024, lowest 0, highest 27.D · poor
LatviaEurope120250.5Latvia Diphtheria: 2000 to 2025, latest 1 in 2025, lowest 0, highest 264.A · strong
SloveniaEurope120250.5Slovenia Diphtheria: 2001 to 2025, latest 1 in 2025, lowest 0, highest 1.A · strong
LithuaniaEurope120250.4Lithuania Diphtheria: 2000 to 2025, latest 1 in 2025, lowest 0, highest 4.A · strong
Netherlands (Kingdom of the)Europe720250.4Netherlands (Kingdom of the) Diphtheria: 2000 to 2025, latest 7 in 2025, lowest 0, highest 14.A · strong
NorwayEurope220250.4Norway Diphtheria: 2000 to 2025, latest 2 in 2025, lowest 0, highest 8.A · strong
AustriaEurope320250.3Austria Diphtheria: 2000 to 2025, latest 3 in 2025, lowest 0, highest 62.A · strong
SwedenEurope320250.3Sweden Diphtheria: 2000 to 2025, latest 3 in 2025, lowest 0, highest 4.A · strong
CambodiaWestern Pacific320250.2Cambodia Diphtheria: 2000 to 2025, latest 3 in 2025, lowest 0, highest 7.A · strong
ChadAfrica420250.2Chad Diphtheria: 2023 to 2025, latest 4 in 2025, lowest 4, highest 2599.D · poor
IraqEastern Mediterranean820250.2Iraq Diphtheria: 2000 to 2025, latest 8 in 2025, lowest 0, highest 34.A · strong
UgandaAfrica1020250.2Uganda Diphtheria: 2002 to 2025, latest 10 in 2025, lowest 0, highest 49.D · poor
United Kingdom of Great Britain and Northern IrelandEurope1520250.2United Kingdom of Great Britain and Northern Ireland Diphtheria: 2000 to 2025, latest 15 in 2025, lowest 0, highest 88.A · strong
AfghanistanEastern Mediterranean520250.1Afghanistan Diphtheria: 2000 to 2025, latest 5 in 2025, lowest 0, highest 854.B · good
Burkina FasoAfrica220250.1Burkina Faso Diphtheria: 2000 to 2025, latest 2 in 2025, lowest 0, highest 147.A · strong
CanadaAmericas520250.1Canada Diphtheria: 2000 to 2025, latest 5 in 2025, lowest 0, highest 6.A · strong
GreeceEurope120250.1Greece Diphtheria: 2000 to 2025, latest 1 in 2025, lowest 0, highest 1.A · strong
PolandEurope320250.1Poland Diphtheria: 2000 to 2025, latest 3 in 2025, lowest 0, highest 3.B · good
SpainEurope320250.1Spain Diphtheria: 2000 to 2025, latest 3 in 2025, lowest 0, highest 3.A · strong
AlbaniaEurope020250Albania Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 4.B · good
American Samoa020110American Samoa Diphtheria: 2000 to 2011, latest 0 in 2011, lowest 0, highest 0.no data
AndorraEurope020250Andorra Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
AngolaAfrica020250Angola Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 69.D · poor
AnguillaAmericas020250Anguilla Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
Antigua and BarbudaAmericas020250Antigua and Barbuda Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
ArgentinaAmericas020250Argentina Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.B · good
ArmeniaEurope020250Armenia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 6.B · good
ArubaAmericas020240Aruba Diphtheria: 2017 to 2024, latest 0 in 2024, lowest 0, highest 0.C · weak
AzerbaijanEurope020250Azerbaijan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 7.B · good
BahamasAmericas020250Bahamas Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
BahrainEastern Mediterranean020250Bahrain Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
BangladeshSouth-East Asia020250Bangladesh Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 125.A · strong
BarbadosAmericas020250Barbados Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
BelarusEurope020250Belarus Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 52.B · good
BelizeAmericas020250Belize Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
BeninAfrica020250Benin Diphtheria: 2002 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
BermudaAmericas020250Bermuda Diphtheria: 2004 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
BhutanSouth-East Asia020250Bhutan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.A · strong
Bolivia (Plurinational State of)Americas020250Bolivia (Plurinational State of) Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 5.B · good
Bosnia and HerzegovinaEurope020250Bosnia and Herzegovina Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
BotswanaAfrica020250Botswana Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 6.B · good
BrazilAmericas420250Brazil Diphtheria: 2000 to 2025, latest 4 in 2025, lowest 0, highest 85.A · strong
British Virgin IslandsAmericas020250British Virgin Islands Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
Brunei DarussalamWestern Pacific020250Brunei Darussalam Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
BulgariaEurope020250Bulgaria Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
BurundiAfrica020110Burundi Diphtheria: 2000 to 2011, latest 0 in 2011, lowest 0, highest 0.no data
Cabo VerdeAfrica020250Cabo Verde Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
CameroonAfrica020250too few pointsD · poor
Cayman IslandsAmericas020250Cayman Islands Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
ChileAmericas020250Chile Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.A · strong
ChinaWestern Pacific020250China Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 19.B · good
China, Hong Kong SARWestern Pacific020250China, Hong Kong SAR Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
China, Macao SARWestern Pacific020250China, Macao SAR Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
ColombiaAmericas020250Colombia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 11.A · strong
ComorosAfrica020240Comoros Diphtheria: 2002 to 2024, latest 0 in 2024, lowest 0, highest 0.D · poor
CongoAfrica020230Congo Diphtheria: 2001 to 2023, latest 0 in 2023, lowest 0, highest 10.D · poor
Cook IslandsWestern Pacific020190Cook Islands Diphtheria: 2000 to 2019, latest 0 in 2019, lowest 0, highest 0.D · poor
Costa RicaAmericas020250Costa Rica Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
CroatiaEurope020250Croatia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
CubaAmericas020250Cuba Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
CuraçaoAmericas020190Curaçao Diphtheria: 2018 to 2019, latest 0 in 2019, lowest 0, highest 0.D · poor
CyprusEurope020250Cyprus Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Côte d'IvoireAfrica020250Côte d'Ivoire Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 41.C · weak
Democratic People's Republic of KoreaSouth-East Asia020220Democratic People's Republic of Korea Diphtheria: 2001 to 2022, latest 0 in 2022, lowest 0, highest 0.D · poor
DenmarkEurope020250Denmark Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.B · good
DjiboutiEastern Mediterranean020250Djibouti Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
DominicaAmericas020250Dominica Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Dominican RepublicAmericas020250Dominican Republic Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 122.A · strong
EcuadorAmericas020250Ecuador Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 5.A · strong
EgyptEastern Mediterranean020250Egypt Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
El SalvadorAmericas020250El Salvador Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Equatorial GuineaAfrica020240Equatorial Guinea Diphtheria: 2001 to 2024, latest 0 in 2024, lowest 0, highest 0.D · poor
EritreaAfrica020250Eritrea Diphtheria: 2004 to 2025, latest 0 in 2025, lowest 0, highest 8.A · strong
EstoniaEurope020250Estonia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 2.C · weak
EthiopiaAfrica020250Ethiopia Diphtheria: 2019 to 2025, latest 0 in 2025, lowest 0, highest 7184.C · weak
FijiWestern Pacific020220Fiji Diphtheria: 2001 to 2022, latest 0 in 2022, lowest 0, highest 0.D · poor
FinlandEurope020250Finland Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 2.B · good
French PolynesiaWestern Pacific020250French Polynesia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
GambiaAfrica020250Gambia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
GeorgiaEurope020250Georgia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 28.A · strong
GhanaAfrica020250Ghana Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 47.C · weak
GrenadaAmericas020250Grenada Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
GuamWestern Pacific020240Guam Diphtheria: 2000 to 2024, latest 0 in 2024, lowest 0, highest 0.D · poor
GuatemalaAmericas020250Guatemala Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 2.B · good
Guinea-BissauAfrica020250Guinea-Bissau Diphtheria: 2006 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
GuyanaAmericas020250Guyana Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
HondurasAmericas020250Honduras Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
HungaryEurope020250Hungary Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
IcelandEurope020250Iceland Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Iran (Islamic Republic of)Eastern Mediterranean020250Iran (Islamic Republic of) Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 190.A · strong
IrelandEurope020250Ireland Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 1.A · strong
IsraelEurope020220Israel Diphtheria: 2000 to 2022, latest 0 in 2022, lowest 0, highest 1.D · poor
ItalyEurope220250Italy Diphtheria: 2000 to 2025, latest 2 in 2025, lowest 0, highest 4.B · good
JamaicaAmericas020250Jamaica Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
JapanWestern Pacific020250Japan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.C · weak
JordanEastern Mediterranean020250Jordan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
KazakhstanEurope020250Kazakhstan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 14.C · weak
KiribatiWestern Pacific020250Kiribati Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
Kosovo (in accordance with UN Security Council resolution 1244 (1999))Europe020250Kosovo (in accordance with UN Security Council resolution 1244 (1999)) Diphtheria: 2022 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
KuwaitEastern Mediterranean020250Kuwait Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
KyrgyzstanEurope020250Kyrgyzstan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 15.B · good
Lao People's Democratic RepublicWestern Pacific020250Lao People's Democratic Republic Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 273.A · strong
LebanonEastern Mediterranean020250Lebanon Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.C · weak
LesothoAfrica020250Lesotho Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 23.D · poor
LiberiaAfrica020220Liberia Diphtheria: 2004 to 2022, latest 0 in 2022, lowest 0, highest 0.D · poor
LibyaEastern Mediterranean020250Libya Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 2.D · poor
MalawiAfrica020250Malawi Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 1.D · poor
MaldivesSouth-East Asia020250Maldives Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
MaltaEurope020250Malta Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Marshall IslandsWestern Pacific020250Marshall Islands Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
MauritiusAfrica020250Mauritius Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 5.D · poor
MexicoAmericas020250Mexico Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Micronesia (Federated States of)Western Pacific020230Micronesia (Federated States of) Diphtheria: 2000 to 2023, latest 0 in 2023, lowest 0, highest 0.D · poor
MonacoEurope020240Monaco Diphtheria: 2002 to 2024, latest 0 in 2024, lowest 0, highest 0.D · poor
MongoliaWestern Pacific020250Mongolia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 6.C · weak
MontenegroEurope020250Montenegro Diphtheria: 2006 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
MontserratAmericas020250Montserrat Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
MoroccoEastern Mediterranean020180Morocco Diphtheria: 2000 to 2018, latest 0 in 2018, lowest 0, highest 0.D · poor
MozambiqueAfrica020190Mozambique Diphtheria: 2001 to 2019, latest 0 in 2019, lowest 0, highest 0.D · poor
NaoeroWestern Pacific020190Naoero Diphtheria: 2000 to 2019, latest 0 in 2019, lowest 0, highest 0.D · poor
New CaledoniaWestern Pacific020240New Caledonia Diphtheria: 2000 to 2024, latest 0 in 2024, lowest 0, highest 1.C · weak
NicaraguaAmericas020250Nicaragua Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
NiueWestern Pacific020250Niue Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
North MacedoniaEurope020250North Macedonia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
Northern Mariana IslandsWestern Pacific020240Northern Mariana Islands Diphtheria: 2000 to 2024, latest 0 in 2024, lowest 0, highest 0.C · weak
OmanEastern Mediterranean020250Oman Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
PalauWestern Pacific020250Palau Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
PanamaAmericas020250Panama Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Papua New GuineaWestern Pacific020250Papua New Guinea Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 593.A · strong
ParaguayAmericas020250Paraguay Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 50.B · good
PeruAmericas020250Peru Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 4.A · strong
PortugalEurope020250Portugal Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
QatarEastern Mediterranean020250Qatar Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 2.B · good
Republic of KoreaWestern Pacific020250Republic of Korea Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
Republic of MoldovaEurope020250Republic of Moldova Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 10.B · good
RomaniaEurope020250Romania Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Russian FederationEurope020250Russian Federation Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 909.A · strong
RwandaAfrica020230Rwanda Diphtheria: 2000 to 2023, latest 0 in 2023, lowest 0, highest 0.D · poor
Saint Kitts and NevisAmericas020250Saint Kitts and Nevis Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Saint LuciaAmericas020250Saint Lucia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Saint Vincent and the GrenadinesAmericas020250Saint Vincent and the Grenadines Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
SamoaWestern Pacific020250Samoa Diphtheria: 2004 to 2025, latest 0 in 2025, lowest 0, highest 1.B · good
San MarinoEurope020250San Marino Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Sao Tome and PrincipeAfrica020210Sao Tome and Principe Diphtheria: 2000 to 2021, latest 0 in 2021, lowest 0, highest 0.D · poor
Saudi ArabiaEastern Mediterranean020250Saudi Arabia Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 10.A · strong
SenegalAfrica020250Senegal Diphtheria: 2005 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
SerbiaEurope020250Serbia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
SeychellesAfrica020250Seychelles Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Sierra LeoneAfrica020250Sierra Leone Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
SingaporeWestern Pacific020240Singapore Diphtheria: 2000 to 2024, latest 0 in 2024, lowest 0, highest 1.D · poor
Sint Maarten (Dutch part)Americas020180Sint Maarten (Dutch part) Diphtheria: 2017 to 2018, latest 0 in 2018, lowest 0, highest 0.D · poor
Solomon IslandsWestern Pacific020250Solomon Islands Diphtheria: 2001 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
Sri LankaSouth-East Asia020250Sri Lanka Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 15.B · good
SurinameAmericas020250Suriname Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
Syrian Arab RepublicEastern Mediterranean020250Syrian Arab Republic Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.C · weak
TajikistanEurope020220Tajikistan Diphtheria: 2000 to 2022, latest 0 in 2022, lowest 0, highest 14.D · poor
Timor-LesteSouth-East Asia020250Timor-Leste Diphtheria: 2002 to 2025, latest 0 in 2025, lowest 0, highest 2.C · weak
TogoAfrica020250Togo Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
TokelauWestern Pacific020250Tokelau Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
TongaWestern Pacific020250Tonga Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
Trinidad and TobagoAmericas020250Trinidad and Tobago Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
TunisiaEastern Mediterranean020250Tunisia Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
TurkmenistanEurope020250Turkmenistan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 30.B · good
Turks and Caicos IslandsAmericas020250Turks and Caicos Islands Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
TuvaluWestern Pacific020190Tuvalu Diphtheria: 2001 to 2019, latest 0 in 2019, lowest 0, highest 0.D · poor
TürkiyeEurope020250Türkiye Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 5.B · good
UkraineEurope020250Ukraine Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 365.A · strong
United Arab EmiratesEastern Mediterranean020250United Arab Emirates Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 1.C · weak
United Republic of TanzaniaAfrica020130United Republic of Tanzania Diphtheria: 2002 to 2013, latest 0 in 2013, lowest 0, highest 0.no data
United States of AmericaAmericas120230United States of America Diphtheria: 2000 to 2023, latest 1 in 2023, lowest 0, highest 2.C · weak
UruguayAmericas020250Uruguay Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
UzbekistanEurope020250Uzbekistan Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 4.B · good
VanuatuWestern Pacific020250Vanuatu Diphtheria: 2002 to 2025, latest 0 in 2025, lowest 0, highest 5.B · good
Venezuela (Bolivarian Republic of)Americas020250Venezuela (Bolivarian Republic of) Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 786.A · strong
Viet NamWestern Pacific320250Viet Nam Diphtheria: 2000 to 2025, latest 3 in 2025, lowest 2, highest 237.A · strong
Wallis and FutunaWestern Pacific020180Wallis and Futuna Diphtheria: 2000 to 2018, latest 0 in 2018, lowest 0, highest 0.D · poor
ZambiaAfrica020240Zambia Diphtheria: 2000 to 2024, latest 0 in 2024, lowest 0, highest 50.C · weak
ZimbabweAfrica020250Zimbabwe Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.B · good
occupied Palestinian territory, including east JerusalemEastern Mediterranean020250occupied Palestinian territory, including east Jerusalem Diphtheria: 2000 to 2025, latest 0 in 2025, lowest 0, highest 0.C · weak
BonaireAmericas02025—Bonaire Diphtheria: 2024 to 2025, latest 0 in 2025, lowest 0, highest 0.D · poor
SabaAmericas02024—too few pointsD · poor
Sint EustatiusAmericas02024—too few pointsD · poor

Sources

Coverage figures are WHO/UNICEF estimates unless a row says otherwise; reported cases are what national authorities sent to WHO and undercount true infections. Each series carries a data-quality grade that says why.

Cite this page. Diphtheria by country. Vaccine Data Navigator, Open Source Medicine Foundation. Built 21 October 2026 from WHO/UNICEF (WIISE) exports and CDC SchoolVaxView. https://vaccinedatanavigator.org/disease-risk/diseases/diphtheria.html

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