Ciguatera Fish Poisoning Outbreak in Vanuatu: What You Need to Know
Vanuatu is currently experiencing an outbreak of Ciguatera Fish Poisoning (CFP), a foodborne illness caused by toxins found in reef fish. As of March 3, 2026, 44 cases have been reported since early January, affecting six islands across the nation.
What is Ciguatera Fish Poisoning?
Ciguatera Fish Poisoning (CFP) occurs when people eat predatory reef fish that have accumulated ciguatoxins. These toxins are produced by marine algae and move up the food chain, concentrating in larger fish. The fish themselves do not appear sick and often taste normal, making diagnosis challenging.
Where is the Outbreak Occurring?
Cases of CFP have been reported on the following islands in Vanuatu:
- Efate
- Tanna
- Ambae
- Pentecost
- Maewo
- Santo
The majority of cases (61 percent) have been reported on Efate.
Who is Affected?
While people of all ages can be affected, young adults aged 15-34 are most commonly impacted, accounting for 28 out of 44 reported cases. Men make up 57 percent of those infected.
What are the Symptoms?
Symptoms of ciguatera fish poisoning typically appear within 24 hours of eating contaminated fish and can include:
- Nausea
- Vomiting
- Diarrhea
- Numbness and tingling
- Unsteady movement or staggering
- Temperature reversal (hot feeling cold, cold feeling hot)
- Blurred vision
- Metallic taste
- Loose teeth
Gastrointestinal symptoms usually resolve within a couple of days, but neurological symptoms can persist for months or even years. Symptoms may similarly recur after consuming certain foods and drinks, such as alcohol, caffeine, nuts, and fish.
Why is this Outbreak Happening Now?
According to the Vanuatu Ministry of Health, the recent increase in cases is linked to very hot weather and heavy rainfall. These conditions promote the growth of the algae that produce ciguatoxins.
What is Being Done?
The Ministry of Health is closely monitoring the situation through routine surveillance systems and working to improve data quality. No deaths have been reported, and three hospitalized individuals have recovered and been discharged.
What Should You Do?
The Ministry of Health urges the public to exercise caution when eating reef fish during this time. If you experience any symptoms of ciguatera fish poisoning, seek immediate medical attention at your nearest health facility.
Key Takeaways
- An outbreak of Ciguatera Fish Poisoning is ongoing in Vanuatu, with 44 cases reported since early January 2026.
- The outbreak affects six islands, with Efate reporting the most cases.
- Young adults are disproportionately affected.
- Symptoms can range from gastrointestinal distress to neurological issues and may persist for an extended period.
- Hot weather and heavy rainfall are contributing factors.