People who used illicit drugs PWUDs represent an important population group for acquisition and viral dispersion. Among PWUDs, 53 6. In the Americas, high rates were recorded in Brazil and in Caribbean countries 1 β 3. It is estimated that there are 2. Crack cocaine is the main illicit drug consumed by Brazilian users, and has become a major public health problem Among the regions, northern Brazil is notable for containing a significant portion of the Amazon rainforest.
Historically, this area is an important route for trafficking in illicit drugs due to the geographical characteristics that make it difficult to control and facilitate the transportation and commercialization of drugs produced in South American countries 12 β The intense flow of people and illicit products associated with the lack of infrastructure and equipment for collective use has produced several problems in northern Brazil, such as abuse and sexual exploitation of children and adolescents, prostitution, consumption and trafficking of illicit drugs 13 , 15 , Recently, studies have reported a high prevalence of adolescents and young adults who used illicit drugs 15 , In total, the sample number of this study was PWUDs.
All PWUDs declared the frequent use of non-injecting drugs in the last 12 months. However, Crack, called oxy, was the main drug used PWUDs: People who used illicit drugs.
NIDUS: people used only non-injecting drugs during their lives. IDUs: People who have used injectable and non-injectable drugs during their lives. Average of Brazilian minimum wage equals Reais equivalent to US dollars from to Overall, 53 6. Proviral DNA was not detected in nine seropositive samples, possibly indicative of non-specific seropositivity. NIDUs: people used only non-injecting drugs during their lives.
During the construction of the HTLV-1 phylogenetic tree, 10 of 25 sequences showed some nucleotide difference, so only one copy of each identical nucleotide sequence remained in alignment. In Fig. The statistical support was applied using bootstrap replicates. The HTLV-2 samples were grouped into two strain subtypes: 2b During the construction of the HTLV-2 phylogenetic tree, 12 of 19 sequences showed some nucleotide difference.
