Table 3. Operational classification of pure neural leprosy based on the number of affected nerves and the presence of acid-fast bacilli (AFB) in the nerve biopsy.

		Classification by the presence of AFB		Total
		PB	MB
Classification by number of affected nerves	PB	26.9% (14)	3.8% (2)	30.8% (16)
	MB	61.5% (32)	7.7% (4)	69.2% (36)
Total		88.5% (46)	11.5% (6)	100% (52%)

AFB: acid-fast bacilli. PB: paucibacillary. MB: multibacillary.