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Table 1 Specimen results for 97 prospectively accrued cases

From: TB incidence and characteristics in the remote gulf province of Papua New Guinea: a prospective study

Clinical specimen

Total number

Microscopy (numbers)

Xpert MTB/RIF (numbers)#

New + relaspe cases (N=80)

   

No clinical specimens

33

  

Sputum

45

AFB smear negative (18)

MTB DNA detected (5/16**)

   

High

(0)

 

Medium

(0)

 

Low

(2)

 

Very low

(3)

 

rpOB mutation

(0)

AFB smear positive (27)

MTB DNA detected (25/26*)

Scanty

(2)

High

(11)

1+

(2)

Medium

(6)

2+

(11)

Low

(6)

3+

(12)

Very low

(2)

Back abscess aspirate

1

 

rpOB

(2)

Ear swab

1

1+

 
 

2+

Treatment failure/defaulted cases (N=17)

   

No clinical specimens

8

  

Sputum

8

  
 

AFB smear negative

(4)

MTB DNA detected

(0/3*)

 

AFB smear positive

(4)

MTB DNA detected

(2/3*)

Scanty

(1)

High

(2)

  

1+

(0)

Medium

(0)

2+

(0)

Low

(0)

3+

(3)

Very low

(0)

Lymph node aspirate

1

1+

rpOB mutation

(1)

  1. #Non-sputum specimens were not analyzed by Xpert.
  2. Lost sputum specimens could not be analyzed with Xpert (*1 lost, **2 lost).