Residents in Mae Sariang bought chicken eggs to boil.They peeledthe eggs to find a pink color inside. Meanwhile, the Mae Hong Son Provincial Public Health Office stated these are genuine eggs but may be contaminated with bacteria. Samples have been sent for detailed microbial testing, and a strict warning has been issued not to consume them.
On 16 June 2026, Mr. Weeraphat Thepwongsa, Acting Livestock Officer of Mae Sariang District, along with Mr. Kamon Jaita, Public Health Officer of Mae Sariang District, inspected chicken eggs at a shop in Ban Phae, Village No. 3, Mae Sariang Subdistrict, Mae Sariang District, Mae Hong Son Province. This followed reports from residents who bought eggs that turned pink after boiling, prompting complaints to the Mae Sariang Damrongtham Center. The livestock officer examined the origin of the eggs and their storage conditions, while the public health office sent problematic egg samples to the Medical Science Center 1 in Chiang Mai (MSC1 Chiang Mai) for analysis, with results expected in about one week.
Dr. Thosaphon Ditsiri, Provincial Public Health Doctor of Mae Hong Son, added that the pink discoloration upon boiling may be caused by bacterial contamination. The exact bacteria type awaits confirmation from laboratory results. He advised that anyone encountering such eggs should avoid and refrain from eating them, as they may cause food poisoning, with symptoms like nausea, vomiting, diarrhea, or loose stools. In individuals with weakened immune systems, the infection could be severe, potentially leading to bloodstream infection.
Mr. Kamon Jaita, Public Health Officer of Mae Sariang District, issued a public announcement explaining the cause of this phenomenon is not fake eggs but likely "bacterial contamination" (such as bacteria from the Pseudomonas group or pigment-producing bacteria). This often occurs when eggs have cracks or improper storage, allowing external bacteria to infiltrate and alter the eggs. He warned the public that if eggs show color changes or abnormalities, they must not be consumed under any circumstances due to risks of food poisoning, diarrhea, or gastrointestinal infections. He urged residents who find discolored or abnormal eggs in their area to stop consuming them immediately and report to their local Subdistrict Health Promoting Hospital (SHPH) or public health officers so authorities can promptly investigate and ensure safety.
Investigations found that the shop did not intend to sell substandard products. All eggs were sourced from a wholesale company in Chiang Mai, with the shop acting as a local distributor. The shop expressed responsibility and willingness to replace any problematic products immediately. They affirmed their commitment to honest business practices and customer trust. The shop has operated for about 10 years and has never before seen pink eggs. Meanwhile, the livestock and public health offices in Mae Sariang advised on proper egg storage and how to identify potentially contaminated or unclean eggs.