Weather Outside Your Window: Parts of Florida’s Broward County are under quarantine after giant African land snails were detected

Thursday, June 22, 2023

Parts of Florida’s Broward County are under quarantine after giant African land snails were detected

The snails pose a serious health risk to humans because they carry a parasite called rat lungworm, which can cause meningitis, state officials said.

By Jamiel Lynch, CNN

Published Jun 21, 2023 9:07 AM EDT | Updated Jun 21, 2023 11:10 AM EDT

(CNN) — Some neighborhoods in Broward County in Florida are under quarantine Tuesday after sightings of invasive giant African land snails, known to be one of the most dangerous species, officials said.

The quarantine, announced Tuesday, was established after snails were detected earlier this month in the Miramar area of the county, the Florida Department of Agriculture and Consumer Services said in a news release on Tuesday.

Essentially, the quarantine means it is illegal to move a giant African land snail or plants, which includes soil, compost, and yard waste, in or out of the area without a compliance agreement from the agriculture department.

State officials established two treatment areas within the quarantine zone, a map released by the department shows.

The state agriculture department plans to use the same treatment methodology, which is metaldehyde-based molluscicide, a type of snail bait approved for residential use, according to the news release.

Some neighborhoods in Broward County in Florida are under quarantine on June 20 after sightings of invasive giant African land snails. Giant African land snails are seen here in September 2011, in Miami. (Joe Raedle/Getty Images)

Last year, the New Port Richey area of Pasco County was placed under quarantine after the snails were detected.

Giant African land snails eat at least 500 different types of plants, and they can also chomp through stucco, plastic recycling bins and even signs. Their calcium shells bear pointy edges sharp enough to blow out tires of vehicles that run over them.

“These snails could be devastating to Florida agriculture and natural areas as they cause extensive damage to tropical and subtropical environments,” the state Department of Agriculture said Tuesday.

The snails also pose a health risk to humans because they carry a parasite called rat lungworm, which can cause meningitis, according to the state Department of Agriculture. The condition leads to swelling of membranes surrounding the brain and spinal cord, the US Centers for Disease Control and Prevention says.