Education Lecture

• Food-borne Virus Infection......Naokazu TAKEDA...... 1

Symposium: Control of Food Hygiene and the Role of Microbiological Testing

• Introduction......Yoichi ONOUE and Tsutomu ASAO...... 7
• To Understand ISO 22000: The Role of Microbiological Testing-......Emiko ARAKI...... 8
• International Trends in Setting Microbiological Standards and Criteria for Foods......Fumiko KASUGA...... 13
• Standardized Bacteriological Analytical Methods for Food Hygiene: The Japanese Present Argument and Future Prospects......Shizunobu IGIMI...... 18
• Studies on Standard Detection Method for Salmonella, Staphylococcus aureus and Vibrio parahaemolyticus in Food......Michiko MIYAHARA...... 23

Original

• Descriptive Epidemiology of Norovirus Outbreaks in Daycare Centers: Clinical Features in Young Children and Characteristics of Norovirus Infection......Rikio TANIGUCHI, Yoshizumi HATANO, Mutsumi MOTODATE, Atsuko TANAKA and Tanji HOSHI...... 27

Short Paper

• Heat Inactivation of Newcastle Disease Virus (NDV) in Egg Yolk and Its Survivability in Mayonnaise......Nobuhiro SASHIHARA, Mineo HASEGAWA, Toshiro IZUCHI, Hiroshi ITO and Toshihiro ITO...... 32

Epidemiology

• Epidemiology of Salmonella Enteritidis Isolates from Chicken Meat Depend on Molecular Analysis......Harue KITAZUME, Yuko MATSUMOTO, Yukiko ISHIGURO, Mikiko YAMADA, Tetsunori MUTO and Hidemasa IZUMIYA...... 36

Book Review

• Yoichi KAMATA...... 42

• Information...... 44
• Notes to Contributors...... 47