good day DOC, I was having symptoms of malaria so i went for a laboratory test check up..i was diagonized with malaria parasite falciparum.. And my widal test says :salmonella typhi= O 1:40 ,H 1:40 . Salmonella paratyphi A= O 1:40 , H 1:80. Salmonella paratyphi B= O 1:40 , H 1:40. Salmonella paratyphi C= O 1:40 , H 1:40. Please what does this terms mean?