<s>[INST] How much of a threat is TB? [/INST] About a third of the world's population, 2 billion people, carries the TB bacteria, but most
never develops the active disease. Every year 8–10 million people develop the disease
and 2 million die from it. Around 10% of people infected with TB actually develop the
disease in their lifetimes, but this proportion is changing as HIV severely weakens the
human immune system and makes people much more vulnerable (about 10% develop
TB each year).  Source: UNAIDS. Link: https://data.unaids.org/pub/factsheet/2006/tb_hiv_qa.pdf. Field: Lung Disease. Disease: Tuberculosis </s>