Is typhoid or Shigella unusually serious when handling health certificates?

Shigella can cause bacillary dysentery, some patients can become carriers, and carriers can not engage in catering, cooking, conservation and other work. If you are sure you are a carrier, you can't be a waiter.

In addition, the main sources of infection are patients and carriers, and they are infected through contaminated food and drinking water. Therefore, we must handle food and water carefully. Ultraviolet rays can completely kill colonies. For example, we can use UVC ultraviolet rays to sterilize drinking water and install sterilization taps. Wish you all the best.