Bacteria in the Shigella genus cause the disease shigellosis. The symptoms of shigellosis include diarrhea, fever, and intestinal cramping. The disease is unpleasant, but most people recover within a week. Shigellosis is transmitted from one person to another through bodily wastes. You can catch shigellosis from a baby when changing its diaper. People also catch the disease by drinking contaminated water. The best way to avoid shigellosis is through frequent hand-washing with soap. Shigella bacteria can survive on a fly's body for up to 24 days. Suppose that a fly lands on waste from an infected person. That fly could then spread bacteria on everything it lands on for almost a month! How do bacteria survive for so long during harsh conditions until finding a host?

You can get infected by swallowing Shigella. Some ways Shigella can get into your mouth are:

Getting Shigella on your hands and touching your mouth. Shigella can get on your hands by:

Touching surfaces, such as toys, bathroom fixtures, changing tables, and diaper pails contaminated with Shigella bacteria from someone with an infection.

Changing the diaper of a child with a Shigella infection.

Taking care of a person with an infection, including cleaning up after the person uses the toilet.

Eating food prepared by someone with a Shigella infection.

Swallowing recreational water, such as lake water or improperly treated swimming pool water.

Swallowing contaminated drinking water, such as water from a well that’s been contaminated with sewage or flood water.

Exposure to stool (poop) during sexual contact with someone with a Shigella infection or who has recently recovered from a Shigella infection.

Explanation:

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.