Biological Features Aerobic, Gram, noncapsulated, rods Gray-black colonies on tellurite亚碲酸盐 medium o Metachromatic granules Chinese-letter morphology in Gram stain
Viral gastroenteritis It is thought that viruses are responsible for up to 3/4 of all infective diarrhoeas Viral gastroenteritis is the second most common viral illness after upper respiratory tract infection