History of malaria millennium BCE in Greece and China. For thousands of years, traditional herbal remedies have been used to treat malaria. The first effective treatment for malaria came from the bark of cinchona tree, which contains quinine. After the link to mosquitos and their parasites were identified in the early twentieth century, mosquito control measures such as widespread use of the insecticide DDT, swamp drainage, covering or oiling the surface of open water sources, indoor residual spraying and use of insecticide treated nets was initiated. Prophylactic quinine was prescribed in malaria endemic areas, and new therapeutic drugs, including chloroquine and artemisinins, were
Tonic 23 normally fitted with a small outboard motor for docking and maneuvering or optionally an inboard motor could be installed. The design has a hull speed of and the fresh water tank has a capacity of Similar sailboats Tonic 23 The Tonic 23 is a French trailerable sailboat, that was designed by Philippe Harlé as a coastal cruising sailboat and first built in 1985. The design was built by Jeanneau in France from 1985 until 1992, but it is now out of production. During its production run about 750 boats were completed. The Tonic 23 is a small recreational keelboat, built