Wondering if the post office is open on July 4, and if the letter carrier will deliver the mail on Saturday? Although most retail stores and restaurants will be open on Independence Day, the U.S. Postal Service will closed down for the day.
Leeches are famous as blood-suckers. The species that feed on blood have special chemicals in their saliva that prevents blood-clotting. Many blood-feeding leeches attack only fish, a few attack any vertebrate (including people), and a few are specialists on another group of animals, like turtles or waterbirds. There are also lots of leech species that don't suck blood. They are predators, eating worms, snails, aquatic insects, and other invertebrates.
Don't eat undercooked or raw freshwater fish, eels, frogs, birds, and reptiles, particularly if you are in an area of the world where the parasite is commonly found. Marinating freshwater fish in lime juice, as is done in ceviche, does not kill the parasite.he patient should be questioned about any recent history of eating undercooked or raw freshwater fish, eels, frogs, birds, or reptiles in an area where the parasite is found. Special blood tests for Gnathostoma are available, but the blood must be sent to specialty labs outside the United States.