Tonic water and other tropical posts mixed the powder with soda and sugar, and tonic water was created. The first commercial tonic water was produced in 1858. The mixed drink gin and tonic also originated in British colonial India, when the British mixed their medicinal quinine tonic with gin. Since 2010, at least four tonic syrups have been available in the US. Consumers add carbonated water to the syrup to make tonic water, allowing drinkers to adjust the flavor intensity. Medicinal tonic water originally contained only carbonated water and a large amount of quinine. However, most tonic water today contains less quinine
History of malaria a report to the State Board of Health, which led to a study of mosquito-malaria links and the first efforts for malaria prevention. Massachusetts state pathologist, Theobald Smith, asked that White's son collect mosquito specimens for further analysis, and that citizens add screens to windows, and drain collections of water. Britain's Sir Ronald Ross, an army surgeon working in Secunderabad India, proved in 1897 that malaria is transmitted by mosquitoes, an event now commemorated via World Mosquito Day. He was able to find pigmented malaria parasites in a mosquito that he artificially fed on a malaria patient who had crescents