HI SIR, i HAVE DONE WIDAL TEST, THE REPORT SHOWS THAT SALMONELLA TYPHI O : POSITIVE UPTO 1:80 DILUTION, SALMONELLA TYPHI H : POSITIVE UPTO 1:80 DILUTION,SALMONELLA PARATYPHI AH : NEGATIVE, SALMONELLA PARATYPHI BH :NEGATIVE, WHAT DOES THESE MEAN? KIND ANSWER ME PLS