A microbiologist stuck her son's hand in a petri dish to remind how germs cover our bodies in addition to the environment.

According to Tasha Sturm, a microbiology tech at Cabrillo College, she made her 8-year-old son leave a handprint in a petri dish that was filled with agar jelly.

After that, she put the plate in an incubator. After warming it to body temperature, the bacteria and fungus on her son's hand grew into the cultures that could be seen in image captured by her. The image was seen 2 million times on Imgur.

According to her, "There's nothing on that plate that was horrific. Bacteria is everywhere. We get a healthy immune system from things like this. There's too much hysteria about bugs". Sturm explained that the spots of culture are all likely common bacteria.

Children touch their hands onto every available surface and when the surface is a sterile plate, which is then incubated in a petri dish, it shows how common bacteria are.

Tasha Sturm works as a microbiology lab tech at Cabrillo College in Aptos, California. She daily sees her students cleaning things like cell phones and door knobs for germs, when they perform basic experiments.

According to Sturm, the large white circle in the bottom right of the photo is Bacillus; it is usually found in dirt. She said that some of the other white spots could be staph, or Staphylococcus and the yellow and orange spots could be yeast.