Manila: The Bureau of Fisheries and Aquatic Resources-Negros Island Region (BFAR-NIR) is working with local government units (LGUs) in monitoring markets after incidents of fish poisoning linked to consumption of a type of tuna called "aloy" and "tulingan" in Negros Occidental. At least three LGUs, including Cadiz City as well as the municipalities of Hinigaran and La Castellana, have reported cases of scombroid fish poisoning this week.

According to Philippines News Agency, the BFAR-NIR has issued an advisory related to the cases in Cadiz City, stating that its technical team is investigating the incident. Preliminary reports indicated that the symptoms observed align with scombroid fish poisoning. BFAR-NIR emphasized their collaboration with the local government of Cadiz and highlighted their efforts to monitor several wet markets in Negros Occidental to ensure consumer safety.

On Wednesday, the La Castellana Municipal Health Office, alongside Mayor A±ejo Nicor, advised residents to avoid purchasing and consuming "aloy" after six locals exhibited allergic symptoms following its consumption. The La Castellana Primary Care Facility mentioned in an advisory that the exact cause is under investigation, focusing on potential contamination or improper handling of the fish products.

BFAR-NIR explained that "tulingan" and other scombroid species have high levels of free histidine in their muscle tissue. Without immediate and continuous cold chain maintenance, such as icing at 0°C, naturally occurring bacteria can proliferate. These bacteria contain the enzyme histidine decarboxylase, which converts histidine into high levels of histamine. The agency noted that histamine remains stable under heat, meaning that even thoroughly cooked, fried, or stewed fish can still pose a health risk.

BFAR-NIR urged all seafood traders, processors, and consumers to adhere to proper fish handling practices, summarized as the 3Cs: cooling/chilling, care, and cleanliness.