America tries to eat its vegetables, so the recent Romaine lettuce E. coli outbreak has brought all of Caesar's salad fans to those the barely tolerated A splash of greens in a taco on high alert.

But how did these seemingly innocent little leaves become deadly?

Centers for Disease Control counted 121 cases in 25 states from the Romaine lettuce bred in the Yuma, Arizona region, including [1,945,022] one death and 52 hospitalizations. Fourteen people suffered from kidney failure. The victims are between one and 88 years old.

We sent men to the moon. Many of us carry tiny computers in our pockets. Why can not we keep the romaine lettuce safe and clean? Here are some reasons why salad is so vulnerable and why finding the source of a bacterial outbreak can be difficult.

America's hearts salad, especially women's

Thanks to the national wellness trend that is being adopted by healthy millennials and aging baby boomers, the consumption of fresh vegetables as opposed to frozen or preserved varieties is on the rise. Add to this the growing popularity of salato-oriented restaurants, such as Tender Greens and Sweetgreen, and the increasing inclusion of salads in the menus of fast food chains.

According to the latest data from market research firm Mintel, 70% of vegetables sold in the US in 2016 were fresh products, 13% more than in 2011, but grow at a 39% clip since then is freshly sliced ​​lettuce, now 11% of what's in stores. It is expected that fresh vegetables will increase by 9% and fresh salads by 33% by 2021.

"The purchase of household vegetables is universal and heavily influenced by fresh produce, and 97% of consumers bought fresh produce last month," said Mintel

the group most affected by the E. coli outbreak of Romaine lettuce is concerned, is the woman. According to the CDC, 63% of the people affected by this episode are female. (19659013) CLOSE