There are 4 calories in 1 ounce of Iceberg Lettuce (Includes Crisphead Types). Calorie breakdown: 8% fat, 76% carbs, 16% protein.
Cryptosporidium (crip-toe-spor-ID-ee-um) is a protozoan, a single-celled parasite that lives in the intestines of animals and people.
Causes and Symptoms of Cryptosporidiosis. Cryptosporidiosis (often called âCryptoâ) is a diarrheal disease caused by the protozoan parasite Cryptosporidium spp. During the past 2 decades, Crypto has become recognized as one of the most common causes of waterborne illnesses (drinking and recreational) in humans in the United States.