One severe complication associated with E. coli infection is hemolytic uremic syndrome (HUS). The infection produces toxic substances that destroy red blood cells, causing kidney injury. HUS can require intensive care, kidney dialysis, and transfusions.
All freezers should be in the 0 to 8 degrees Fahrenheit (approximately -18 degrees to -13 degrees Celsius) range. However, when you first turn on the freezer, or put a lot of food into it, it may take up to 24 hours for the freezer to reach this temperature range.
Normally it takes a few hours for the freezer to reach the temperature needed for proper usage. However, make sure you check the temperature after these few hours, zero degrees is the perfect temperature for your freezer. If you notice that the temp is not able to reach zero degrees you may need to repair your freezer.