title: Presence of Torque teno virus (TTV) in tap water in public schools from Southern Brazil.
abstract: Torque teno virus (TTV) was surveyed in tap water collected in schools from three municipalities located in the south of Brazil. TTV genomes were found in 11.7 % (4/34) of the samples. TTV DNA was detected in 10.5 % (2/19) of the samples collected at the city of Caxias do Sul and in 25 % (2/8) of the samples from Pelotas. Those cities have a low rate of sewage treatment. All samples from Santa Cruz do Sul, which has nearly 92 % of its sewage treated, were negative. These results suggest that the amount of sewage treated may have an effect on the detection rates of TTV DNA in drinking water in a given urban area, showing a mild negative correlation (r = -0.76), when comparing the percentage of sewage treatment to the detection of TTV genomes. The detection rate of TTV was also compared with Escherichia coli, showing a strong correlation (r = 0.97), indicating that TTV may be a suitable marker of fecal contamination.
authors: Molecular Microbiology Laboratory, Institute of Health Sciences, Universidade Feevale, RS-239 2755, Novo Hamburgo, RS, 93352-000, Brazil.
authors: Andréia Dalla
authors: AD
authors: Vecchia
authors: Mariana
authors: M
authors: Kluge
authors: Joseane V
authors: JV
authors: dos Santos da Silva
authors: Juliana
authors: J
authors: Comerlato
authors: Manoela T
authors: MT
authors: Rodrigues
authors: Juliane D
authors: JD
authors: Fleck
authors: Roger B
authors: RB
authors: da Luz
authors: Thais F
authors: TF
authors: Teixeira
authors: Paulo M
authors: PM
authors: Roehe
authors: Roberta
authors: R
authors: Capalonga
authors: Ana Beatriz
authors: AB
authors: Oliveira
authors: Fernando R
authors: FR
authors: Spilki
mesh_terms: D001938:Brazil; D004279:DNA, Viral / Q000302:isolation & purification*; D060766:Drinking Water / Q000821:virology*; D005759:Gastroenteritis / Q000821:virology; D016679:Genome, Viral; D016133:Polymerase Chain Reaction; D012307:Risk Factors; D012722:Sewage / Q000821:virology; D022783:Torque teno virus / Q000302:isolation & purification*; D014871:Water Microbiology
chemical_list: D004279:DNA, Viral; D060766:Drinking Water; D012722:Sewage