In a worrying development, health authorities in the United States are grappling with an outbreak of a microscopic parasite known as Cyclospora cayetanensis, which is triggering severe cases of explosive, watery diarrhoea among affected individuals. According to the Centers for Disease Control and Prevention (CDC), at least 145 people across 20 states have fallen ill with cyclosporiasis between May and mid-June, with 20 requiring hospitalisation. No fatalities have been reported so far, but the rapid spread has sparked concern among public health officials.
The parasite, which causes an intestinal infection called cyclosporiasis, leads to distressing symptoms including frequent and sometimes explosive bouts of diarrhoea, severe abdominal cramps, bloating, nausea, vomiting, loss of appetite, fatigue, and weight loss. In many cases, the illness can persist for days or even weeks if left untreated, with symptoms occasionally recurring.
Cyclosporiasis is a type of food poisoning caused by the parasite. The infection is often linked to consumption of contaminated fresh produce, such as fruits and vegetables imported from regions where the parasite is more prevalent, though the exact source of this current outbreak remains under investigation.
New York has reported the highest number of cases, followed by clusters in other states including Michigan, Illinois and Texas. Other states linked to the outbreak include Alaska, Colorado, Connecticut, Florida, Georgia, Louisiana, Massachusetts, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and Wisconsin.
The CDC, along with state health departments, is actively tracing the origins of the contamination, as cyclosporiasis is not typically common in the US and is more frequently associated with travel to tropical or subtropical areas. Health officials are advising the public to practise good hygiene, thoroughly wash produce, and seek medical attention if symptoms appear, particularly for vulnerable groups such as the elderly, young children, and those with weakened immune systems.
