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- W2803209818 abstract "Independent epidemiology for respective human T‐cell lymphotropic virus (HTLV) types 1 and 2 is little known in blood donors in Brazil, where screening for HTLV‐1/2 is mandatory at blood banks, but no testing to confirm/differentiate these viruses. Therefore, this study aims to assess the prevalence of HTLV‐1 and ‐2 in a first‐time blood donor population in Northeastern Brazil and to carry out molecular characterization of respective isolates. A cross‐sectional study was conducted at the State Blood Bank in Piauí. Samples were screened for anti–HTLV‐1/2 by enzyme immunoassay, and reactive samples were confirmed using a line immunoassay and polymerase chain reaction (PCR). Of 37 306 blood donors, 47 were anti–HTLV‐1/2 reactive by enzyme immunoassay. After confirmed by line immunoassay, 22 were positive for HTLV‐1 (0.59 per 1000; 95% CI: 0.38‐0.87), 14 were positive for HTLV‐2 (0.37 per 1000; 95% CI: 0.21‐0.61), 1 was indeterminate, and the remaining donors were negative. The HTLV‐1 infection was also confirmed by PCR in all anti–HTLV‐1‐positive samples, and sequencing classified these isolates as belonging to the Transcontinental (A) subgroup of the Cosmopolitan (1a) subtype. Of 14 anti–HTLV‐2‐positive samples, 11 were also PCR positive, which belonged to subtype a (HTLV‐2a/c). In addition, 38 family members of 5 HTLV‐1‐ and 3 HTLV‐2‐infected donors were analyzed. Familial transmission of HTLV‐1 and ‐2 was evidenced in 3 families. In conclusion, in Northeastern Brazil, where HTLV‐1 and ‐2 are endemic, counseling blood donor candidates and their families might play a key role in limiting the spread of these viruses." @default.
- W2803209818 created "2018-06-01" @default.
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- W2803209818 date "2018-06-07" @default.
- W2803209818 modified "2023-10-02" @default.
- W2803209818 title "HTLV-1 and -2 in a first-time blood donor population in Northeastern Brazil: Prevalence, molecular characterization, and evidence of intrafamilial transmission" @default.
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- W2803209818 doi "https://doi.org/10.1002/jmv.25231" @default.
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