<prompt> According to WHO leprosy is a public health problem if prevalence is more than0.100.010.501  <response>: At the end 2000, leprosy was a public health problem in 10 countries prevalence rate 110,000, mainly in Africa, Asia and Latin America. Thus to call it a public health problem prevalence per 10,000 should be more than 1 and per 100 should be 0.01. 