QUESTION

Who discovered the world’s first malaria vaccine? Is it the US marines in Washington DC or the People’s Republic of China?

ANSWER

Unfortunately there is still no effective malaria vaccine.  You might be referring to the race between the US and China to find an effective malarial treatment during the Vietnam War years.  Currently, artemisinins, from the wormwood plant, discovered in China is the recommended treatment for malaria caused by Plasmodium falciparam.