Legionnaires' disease Legionnaires' disease Legionnaires' disease, also known as legionellosis, is a form of atypical pneumonia caused by any type of "Legionella" bacteria. Signs and symptoms include cough, shortness of breath, high fever, muscle pains, and headaches. Nausea, vomiting, and diarrhea may also occur. This often begins 2-10 days after exposure. The bacterium is found naturally in fresh water. It can contaminate hot water tanks, hot tubs, and cooling towers of large air conditioners. It is usually spread by breathing in mist that contains the bacteria. It can also occur when contaminated water is aspirated. It typically does not spread directly between
Water-dropper (calligraphy) Water-dropper (calligraphy) A is a small device used in East Asian calligraphy as a container designed to hold a small amount of water. In order to make ink a few drops of water are dropped onto the surface of an inkstone. By grinding an inkstick into this water on the inkstone, particles come off and mix with the water, forming ink. Water-droppers may be made of copper, jade or other stone, or ceramic. A water-dropper has two small holes for water and air, and is designed so that only a few drops of water can fall at one time. There