A ‘super-toxic’ strain of E. coli that broke out in Europe has killed 18 people, sickened more than 1,600, and spread to more than 10 European countries. Raw tomatoes, cucumbers, and lettuce are believed to be the carriers of the E. coli, but researchers have been unable to definitively pinpoint the source.

The outbreak is already considered the third-largest in recent world history. Frighteningly, about 500 victims have developed potentially deadly kidney complications. In addition, the strain may be a new one. According to the Huffington Post article E. Coli Outbreak Caused By New Strain: WHO.

‘Chinese and German scientists analyzed the DNA of the E. coli bacteria and determined that the outbreak was caused by ‘an entirely new, super-toxic’ strain that contains several antibiotic-resistant genes, according to a statement from the Shenzhen, China-based laboratory BGI. It said the strain appeared to be a combination of two types of E. coli.’

The World Health Organization (WHO) recommends that to avoid transmission of the disease, people should wash their hands well and frequently, keep raw meat separate from other foods, and thoroughly cook their food. Washing fruits and vegetables, especially if eaten raw, is also important. Peeling raw fruits and vegetables, if possible, can also go a long way in preventing sickness.

While the number of new cases is slowing down, secondary transmission could prolong the outbreak. One of the main causes of secondary transmission is sloppy bathroom habits