Saitama Prefecture has issued an epidemic warning for hand, foot, and mouth disease after infection rates among infants surged this month [1].
The warning follows a sharp increase in cases that primarily affect the youngest children, posing a significant public health challenge for caregivers and childcare facilities across the region.
Health authorities said the number of cases per sentinel site reached 5.10 people [1]. This figure exceeds the national threshold of five people per site [1]. The alert was triggered after a spike in reports during the week of June 22 to June 28, 2024 [1]. This marks the first time in two years that Saitama Prefecture has issued such a warning [1].
The virus is highly contagious and spreads easily through droplets and direct contact [1]. Data shows that infants aged one year or younger account for approximately 60% of the patients [1].
The outbreak is not limited to the Kanto region. A total of 27 prefectures across Japan have now reached the criteria for an epidemic alert [1]. Authorities said the importance of hygiene and monitoring symptoms in young children is critical to prevent further spread.
Because the disease is highly transmissible in environments where infants gather, health officials are urging parents to maintain strict cleanliness. The rapid spread across more than half of Japan's prefectures indicates a widespread seasonal surge that is placing pressure on local pediatric services [1].
“Infants aged one year or younger account for approximately 60% of the patients.”
The simultaneous breach of alert thresholds in 27 prefectures suggests a synchronized national surge of hand, foot, and mouth disease rather than isolated local outbreaks. The heavy concentration of cases in infants under one year indicates a high vulnerability in this demographic, likely exacerbated by the high density of childcare settings where the virus spreads rapidly through contact.
