Question

Question 7  

Which of the following is recommended to detect congenital syphilis?

 

	VDRL
	RPR
	Fluorescent treponemal antibody absorption (FTA-ABS) test
	Polymerase chain reaction (PCR)

Question 8 

A streptozyme test was performed, but the result was negative, even though the child showed clinical signs of streptococcal throat infection 3 weeks previosly and is currently showing signs of acute glomerulonephritis. What should be done next?

 

	Either ASO or anti-deoxyribonuclease B (anti-DNAse B) testing
	another streptozyme test using diluted serum
	streptococcal throat culture
	wait for 3-5 days and repeat streptozyme test

Question 9 

Susbstances produced by Streptococcus pyogenes include all of the following EXCEPT:

 

	Hyaluronidase
	DNAses
	Erythrogenic toxin
	Interferon

Answer 1

 

Answer 7 : third option - Fluorescent treponemal antibody absorption (FTA-ABS) test

For detection of syphilis, this is the best method, among the given options. This test basically checks for antibodies of T. palladium bacteria.

Answer 8: first option- Either ASO or anti-deoxyribonuclease B (anti-DNAse B) testing

ASO test is the best as it is highly sensitive and can determine antibodies present. Repeated tests are advisable.

Answer 9: option four- interferon

This is because the rest of the 3 toxins and other substances are released by the bacteria. And interferons are secreted by the host body itself.