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Table 1 Baseline characteristics of the samples collected in blood banks of the Brazilian Amazon region and exposure to P. vivax and P. falciparum detected by molecular diagnosis

From: Strategy to improve malaria surveillance system preventing transfusion-transmitted malaria in blood banks using molecular diagnostic

Blood banks located in Pará and Rondônia state N Age in years, median (range) Males, % APIa mt-qPCR positive N (%)
P. falciparum P. vivax
Belém–Paráb 120 32 (18–59) 85.0 0.7 (low) 0 (0) 0 (0)
Castanhal–Pará 161 31 (19–59) 73.3 0.4 (low) 0 (0) 0 (0)
Marabá–Pará 193 30 (18–65) 75.6 5.9 (low) 0 (0) 0 (0)
Santarém–Pará 197 34 (20–60) 66.0 3.1 (low) 0 (0) 3 (1.5)
Abaetetuba–Pará 167 30 (19–62) 76.0 0.9 (low) 0 (0) 5 (3.0)
Redenção–Pará 129 34 (20–58) 71.3 0.15 (low) 0 (0) 0 (0)
Capanema–Pará 155 28 (19–60) 66.4 0.5 (low) 0 (0) 0 (0)
Tucuruí–Pará 33 32 (18–65) 60.6 35.6 (medium) 0 (0) 0 (0)
Altamira–Pará 169 26 (18–59) 75.7 22.7 (medium) 0 (0) 0 (0)
Porto Velho–Rondôniac 900 NA NA 54.3 (high) 0 (0) 2 (0.2)
All samples 2224 30 (18–65) 73.1 0 (0) 10 (0.45)
  1. NA not available
  2. aAnnual Parasite Index at the year of the survey with the respective classifications (low, medium or high) as reported by the Brazilian Ministry of Health (http://www.saude.gov.br/sivep_malaria)
  3. bAll donors from Pará state were selected to donation
  4. cAmong all samples collected in Rondônia state, only two were positive for P. vivax by molecular screening, 700 were approved as donors and 200 were excluded, all of them were tested in both molecular methods, the nested polymerase chain reaction (nested-PCR) for amplification of the 18S RNA and the real time PCR (qPCR) to amplify the parasites mtDNA