Biological false positive widal is seen in ________________.
-
malarial infection
-
myocardial infection
-
leptospirosis
-
pseudomonas infection
A
Correct answer
Explanation
Widal test
It is a serological test to diagnose typhoid.
It measures H and Q agglutinins for typhoid and paratyphoid bacilli. It is a tube agglutination reaction.
Causes of false negative widal are
a. Carrier state
b. Inadequate amount of bacterium in the host
c. Technical errors
d. Previous antibiotic treatment