hi doctor my name is kiran, had typhoid fever with jaundice last year September it's cured,in march 2nd week i took anti typhoid vaccination,and now from last 4 days i got cold i gone through the Widal test the result is 1:80 dilution positive, and now i got small doubt is it normal dilution or positive?....because i took vaccination in march,what is normal dilution..do i take madication for this?