Kerala reports Avian Influenza (H1N1), prompting Tamil Nadu to heighten border surveillance and issue preventive measures. Poultry deaths in Alappuzha and Kottayam confirmed H1N1. Key districts near Kerala-Coimbatore, Nilgiris, Theni, Kanyakumari, Tenkasi-face strict monitoring. Vehicles from Kerala will be disinfected; public urged to seek medical help if flu symptoms appear.