Thailand recorded 61 suspected diphtheria cases between January 1 and November 9, 2026, according to Outbreak News Today.
The Department of Disease Control stepped up nationwide surveillance after detecting sporadic cases across multiple regions. Authorities focused their efforts heavily on the southern border provinces and four districts of Songkhla province, where officials recorded 21 cases and 5 deaths, including 3 laboratory-confirmed cases.
Narathiwat province registered the highest total with 10 reported cases. Young children under four years old represent the most affected age group in the national tally.
Patients ranged in age from 8 months to 82 years with a median age of 18 years. The male-to-female ratio stood at 1.14 to 1.
“At present, there is no evidence of a widespread outbreak across the country; however, the possibility of remaining cases stays open,” Dr. Jurai Wongsawat, a senior medical expert and spokesperson for the Department of Disease Control, told Outbreak News Today.
The national case-fatality rate reached 13 percent with eight deaths recorded during the reporting period. The bacterial infection spreads through coughing, sneezing, or contact with secretions from an infected individual.
Symptoms typically appear within two to five days and include fever, sore throat, and difficulty swallowing. A distinct grayish-white membrane forms firmly inside the throat.
“Especially in communities where children have not received vaccinations or have not completed the full recommended series, the Department of Disease Control is maintaining continuous nationwide surveillance while strengthening disease prevention and control measures in high-risk areas,” Wongsawat told Outbreak News Today.
Health officials coordinated with local administrative organizations, educational institutions, and community leaders to locate children who missed scheduled immunizations. Public health teams stocked diphtheria antitoxin to treat severe infections and lower mortality rates.
Children require five vaccine doses administered at 2, 4, and 6 months, with boosters at 18 months and 4 years. Adults need periodic tetanus and diphtheria booster shots.
“I would like to urge parents to check whether their children have received all their required vaccinations,” Wongsawat told Outbreak News Today.
Infected individuals experience fever, sore throat, and difficulty swallowing. A characteristic grayish-white membrane forms in the throat, which can cause airway obstruction or heart and nervous system complications.
Young children under four years old represent the demographic with the highest number of reported cases. The overall patient age range spans from 8 months to 82 years.
Parents should bring their child’s vaccination record to a local public health facility to arrange catch-up shots immediately rather than waiting for an outbreak to occur.