In the temperature danger zone, how many hours does it take a pathogen to grow to levels high enough to make someone sick?

In the temperature danger zone, how many hours does it take a pathogen to grow to levels high enough to make someone sick?

• A. 4 hours
• B. 2 hours
• C. 6 hours
• D. 8 hours

Answer: (A)

Bacteria grow fastest when food sits in the temperature danger zone, the range where warm temps let pathogens multiply quickly. The longer perishable food stays in that zone, the more likely harmful levels will build up and cause illness. In practice, about four hours is used as the threshold after which the risk becomes high enough that the food should be discarded or not served. This reflects that many pathogens can undergo several doublings in that time, pushing their numbers into dangerous levels. To stay safe, keep foods out of this zone as much as possible or limit exposure to roughly four hours.

Bacteria grow fastest when food sits in the temperature danger zone, the range where warm temps let pathogens multiply quickly. The longer perishable food stays in that zone, the more likely harmful levels will build up and cause illness. In practice, about four hours is used as the threshold after which the risk becomes high enough that the food should be discarded or not served. This reflects that many pathogens can undergo several doublings in that time, pushing their numbers into dangerous levels. To stay safe, keep foods out of this zone as much as possible or limit exposure to roughly four hours.