# Infectious disease outbreaks in Vietnam

> Live situation record from CLSTR: https://clstr.news/situations/infectious-disease-outbreaks-in-vietnam
> Updated: 2026-10-24T17:56:25.000Z. Sources: 16. Developments: 5.

Vietnam continues to face rising rates of various infectious diseases. Dengue fever remains a critical concern, particularly in Dong Nai, where health authorities report the disease is present in 100% of communes and wards. The province has recorded nearly 18,000 cases and 8 deaths through week 41, with medical professionals warning that children may experience severe complications, such as shock and multi-organ damage, as early as the third or fourth day of illness. In Ho Chi Minh City, cumulative dengue cases have exceeded 40,678, while hand, foot, and mouth disease has also seen significant increases. The city reported over 1,800 hand, foot, and mouth cases in a single week—a 7.9% rise over the previous four-week average—bringing the yearly total to over 42,315 cases.

Influenza A remains a major driver of respiratory illness. In Hanoi, medical facilities report an average of 200 to 300 influenza patients weekly. Doctors at the National Hospital for Tropical Diseases have highlighted severe cases among vulnerable populations, including elderly patients with hypertension, stroke history, or chronic obstructive pulmonary disease (COPD) requiring intensive respiratory support. Medical experts warn that the virus can cause rapid respiratory decline, pneumonia, and respiratory failure, noting that severity cannot be judged solely by fever levels.

## Timeline

### 2026-10-24: Ho Chi Minh City and Dong Nai report rising dengue and hand-foot-mouth disease cases

Vietnam reports rising cases of hand-foot-mouth disease in Ho Chi Minh City and severe dengue fever complications in Dong Nai, prompting urgent medical warnings and mosquito control efforts.

2 sources. https://clstr.news/cluster/ho-chi-minh-city-and-dong-nai-report-rising-dengue-and-hand-foot-mouth-disease-cases

### 2026-10-24: Influenza A cases rise in Vietnam, increasing risk of severe complications

Influenza A cases are rising in Vietnam, with medical officials warning of severe respiratory complications in children, the elderly, and those with underlying health conditions.

6 sources. https://clstr.news/cluster/influenza-a-cases-rise-in-vietnam-increasing-risk-of-severe-complications

### 2026-10-21: Vietnam reports rise in tuberculosis and Influenza A cases

Vietnam sees a rise in respiratory illnesses, with hospitals reporting hundreds of new tuberculosis cases in young adults and a significant spike in Influenza A infections among children.

2 sources. https://clstr.news/cluster/vietnam-reports-rise-in-tuberculosis-and-influenza-a-cases

### 2026-10-15: Vietnam reports surge in respiratory infections and Influenza A

Vietnam is seeing a surge in acute respiratory infections and Influenza A, particularly in Ho Chi Minh City and Hanoi, posing high risks to children, the elderly, and those with underlying health conditions.

10 sources. https://clstr.news/cluster/ho-chi-minh-city-reports-64-rise-in-acute-respiratory-infections

### 2026-10-04: Vietnam reports rising dengue fever and infectious disease cases

Vietnam faces rising dengue fever and hand, foot, and mouth disease cases, with high infection rates and dangerous virus types reported in Dong Nai, Da Nang, and Ho Chi Minh City.

5 sources. https://clstr.news/cluster/vietnam-reports-rising-dengue-fever-and-infectious-disease-cases

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Cite as: Infectious disease outbreaks in Vietnam. CLSTR, https://clstr.news/situations/infectious-disease-outbreaks-in-vietnam