| a large clostridium perfringens foodborne outbreak with an unusual attack rate pattern. | on november 7, 1985, a clostridium perfringens gastroenteritis outbreak occurred in approximately 44% of the 1,362 employees at a connecticut factory. although the same foods were served to all three shifts at an employee banquet on november 6, the attack rate was almost twice as high for those who ate on the day shift (attack rate = 50%) than for those on the evening shift (attack rate = 20%) or night shift (attack rate = 29%). among employees of the day shift, attack rates were highest for tho ... | 1988 | 2893540 |