Tonic water Tonic water Tonic water (or Indian tonic water) is a carbonated soft drink in which quinine is dissolved. Originally used as a prophylactic against malaria, tonic water usually now has a significantly lower quinine content and is consumed for its distinctive bitter flavor. It is often used in mixed drinks, particularly in gin and tonic. Quinine was added to the drink as a prophylactic against malaria, since it was originally intended for consumption in tropical areas of South Asia and Africa, where the disease is endemic. Quinine powder is so bitter that British officials stationed in early 19th century India
Malaria vaccine Navy were immunized against Plasmodium falciparum by the bites of 1001 to 2927 mosquitos that had been irradiated with 15,000 rads of gamma rays from a Co-60 or Cs-137 source. This level of radiation being sufficient to attenuate the malaria parasites so that while they could still enter hepatic cells, they could not develop into schizonts or infect red blood cells. Over a span of 42 weeks, 24 of 26 tests on the volunteers showed that they were protected from malaria infection. Malaria vaccine Malaria vaccine is a vaccine that is used to prevent malaria. The only approved vaccine as