Recently, the U.S. has been in an uproar over salad.

This isn't just a case of food poisoning from eating salad; it's a food safety emergency caused by a parasite, and the culprit is the commonly consumed 'iceberg lettuce.'

Currently, U.S. health authorities are actively investigating, and the number of patients infected with the parasite known as 'cyclospora' has already surpassed 1,600, with over 90 people hospitalized.

Fortunately, no one has lost their life, but this outbreak is one of the largest of its kind in recent history.

When infected with the cyclospora parasite (with an incubation period of about one week), the first symptom is often severe watery diarrhea. It doesn't just stop after one or two episodes; it can lead to multiple trips to the bathroom in a single day.

Along with this, severe abdominal pain, bloating, nausea, and in severe cases, vomiting can occur. A loss of appetite can lead to an inability to eat anything, and extreme fatigue, weakness, low-grade fever, and muscle aches can feel like a severe illness.

The most troublesome characteristic is the 'persistence of symptoms that can last for an unusually long time.'

While typical bacterial food poisoning usually improves after a few days, this parasite can have symptoms that seem to improve for a few days only to recur, tormenting individuals for weeks or even months.

If this process becomes prolonged, the body can lose significant fluids, leading to dehydration and weight loss, so children and the elderly, who have weaker immune systems, must receive medical treatment.

Where did this all start? Tracing it back, some locations of the popular fast-food chain 'Taco Bell' were implicated, as infected individuals reported visiting these restaurants.

These locations had been using iceberg lettuce sourced from Mexico.

Ultimately, Taylor Farms, a large produce company in California, decided to voluntarily recall all lettuce sourced from central Mexico as a precaution.

The company stated, "Although it is a very small amount, less than 1% of the total supply, customer safety comes first, so we will collect it all."

This parasite is concerning because it differs from typical food poisoning. It enters the body through contaminated water or vegetables, leading to severe watery diarrhea, abdominal pain, nausea, and fatigue.

Moreover, it doesn't just resolve after a few days; symptoms can fluctuate for weeks, causing significant distress.

If not treated in time, dehydration can occur, so those with weakened immune systems need to be particularly cautious.

In the U.S., cases of this parasite tend to increase every summer due to the consumption of imported vegetables and fruits.

While there have been previous outbreaks linked to raspberries or cilantro, it is truly unusual for thousands to fall ill from just one type of lettuce.

Local consumers seem to be in shock, expressing disbelief that the salad they thought was healthy could turn out to be toxic.

Experts advise that when consuming vegetables, they should be thoroughly washed under running water, and it is best to avoid any ingredients that health authorities have issued warnings about.

The trend of healthy eating with salads has ironically turned into a health threat, highlighting the critical importance of food safety and distribution management.