Gin and tonic of water, sugar, lime and gin to the quinine in order to make the drink more palatable, thus gin and tonic was born. Soldiers in India were already given a gin ration, and the sweet concoction made sense. Since it is no longer used as an antimalarial, tonic water today contains much less quinine, is usually sweetened, and is consequently much less bitter. Gin and tonic is a popular cocktail during the summer. A 2004 study found that after 12 hours, "considerable quantities (500 to 1,000 ml) of tonic water may, for a short period of time, lead to quinine
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