Diphtheria News and Research

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Diphtheria is a disease caused by a bacterium, Corynebacterium diphtheriae, that usually affects the tonsils, throat, nose and/or skin. It is passed from person to person by droplet transmission, usually by breathing in diphtheria bacteria after an infected person has coughed or sneezed. Although diphtheria disease is rare in the U.S., it appears that C diphtheriae continues to circulate in areas of the country with previously endemic diphtheria. Diphtheria also occurs in many other parts of the world.

Over 14 million children miss lifesaving vaccines threatening global goals

More than 14 million children missed out on lifesaving vaccines against diphtheria, tetanus and whooping cough last year, putting global goals off track, new UN data shows.

22 Jul 2025

Aluminum vaccines cleared of long-term health risks

Findings from a cohort of 1.2 million children indicate aluminum-adsorbed vaccines do not raise the risk of autism, asthma, or autoimmune diseases.

17 Jul 2025

Routine vaccines may be the key to fighting antibiotic resistance

A study reveals that rising vaccine coverage in children is linked to reduced antibiotic prescriptions, suggesting a shift in the fight against drug resistance.

16 Jul 2025

U.S. could safely end routine adult tetanus and diphtheria shots, review suggests

The United States could safely drop tetanus and diphtheria booster shots for adults and save an estimated $1 billion a year, according to a new review led by researchers at Oregon Health & Science University.

15 Jul 2025

WHO and UNICEF urge action to protect children through vaccines

In 2024, 89% of infants globally – about 115 million – received at least one dose of the diphtheria, tetanus and pertussis (DTP)-containing vaccine, and 85% – roughly 109 million – completed all three doses, according to new national immunization coverage data released today by the World Health Organization (WHO) and UNICEF.

15 Jul 2025

ECDC warns of ongoing diphtheria spread among vulnerable populations

Despite a steady decline in reported cases following a large outbreak in 2022, diphtheria is still being reported in Europe, with the number of cases higher than before 2020.

9 Jul 2025

A Texas boy needed protection from measles. The vaccine cost $1,400.

In the early days of the West Texas measles outbreak, Thang Nguyen eyed the rising number of cases and worried. His 4-year-old son was at risk because he had received only the first of the vaccine's two doses.

30 Jun 2025

When old diseases find new ways in: Europe’s latest diphtheria outbreak explained

A large multicountry outbreak of toxigenic Corynebacterium diphtheriae occurred among migrants entering Europe in 2022, driven primarily by cutaneous infections and involving multiple genetic lineages. Despite the unprecedented surge, transmission to resident populations was limited, but rising antimicrobial resistance and delayed treatment highlight ongoing public health risks.

10 Jun 2025

European study maps cross border spread of diphtheria among refugees

In 2022, Western Europe experienced the largest surge in reported diphtheria infections in 70 years. Clinical and genomic data from the outbreak point toward transmission routes along established migration pathways into Europe.

6 Jun 2025

New WHO report reveals the deeper health impacts caused by COVID-19 pandemic

WHO published its World health statistics report 2025, revealing the deeper health impacts caused by the COVID-19 pandemic on loss of lives, longevity and overall health and well-being.

15 May 2025

Measles could return to endemic status if US vaccination rates fall further

Declining childhood vaccination rates in the United States could lead to a resurgence of measles and other previously eliminated infectious diseases. Simulation models predict that even current vaccination rates may be insufficient to prevent measles from becoming endemic within 20–25 years.

27 Apr 2025

Measles could become endemic again in the United States

Childhood vaccination rates have been falling in the United States, especially since the start of the COVID-19 pandemic.

24 Apr 2025

Global immunization progress threatened by misinformation and funding cuts

Immunization efforts are under growing threat as misinformation, population growth, humanitarian crises and funding cuts jeopardize progress and leave millions of children, adolescents and adults at risk, warn WHO, UNICEF, and Gavi during World Immunization Week, 24–30 April.

24 Apr 2025

How your diet and probiotics can improve vaccine effectiveness

Researchers uncover how probiotics and diet shape the gut microbiome to boost vaccine efficacy, offering new avenues for precision immunization.

23 Mar 2025

Canary in the coalmine: Study warns 21 million children missed measles shots in 2022

Researchers found that 21 million children missed measles vaccination in 2022, far exceeding those missing other vaccines, and 96% were in low- and middle-income countries. The study urges adding measles vaccination rates to global definitions of under-immunized children to better prevent deadly outbreaks.

10 Mar 2025