<s>[INST] What are the links between HIV and TB? [/INST] HIV/AIDS and TB are so closely connected that they are often referred to as coepidemics or dual epidemics. The intersecting epidemic is often denoted as TB/HIV or
HIV/TB. HIV affects the immune system and increases the likelihood of people acquiring
new TB infection. It also promotes both the progression of latent TB infection to active
disease and relapse of the disease in previously treated patients. TB is one of the
leading causes of illness and death in people infected with HIV, particularly in lowincome countries.  Source: UNAIDS. Link: https://data.unaids.org/pub/factsheet/2006/tb_hiv_qa.pdf. Field: Lung Disease. Disease: Tuberculosis </s>