A volunteer walks past a mural of the Brazilian flag as he disinfects an area at the Babilonia favela, in Rio de Janeiro. Photo: AFPA volunteer walks past a mural of the Brazilian flag as he disinfects an area at the Babilonia favela, in Rio de Janeiro. Photo: AFP
A volunteer walks past a mural of the Brazilian flag as he disinfects an area at the Babilonia favela, in Rio de Janeiro. Photo: AFP

‘Earlier signs of coronavirus’ in sewage samples in Brazil

  • Brazilian researchers say they found evidence of the pathogen in waste water in November, 91 days before the first case was detected in the country
  • The presence of the virus was ‘modest’ until it peaked in March, according to the study
Topic |   Coronavirus pandemic
A volunteer walks past a mural of the Brazilian flag as he disinfects an area at the Babilonia favela, in Rio de Janeiro. Photo: AFPA volunteer walks past a mural of the Brazilian flag as he disinfects an area at the Babilonia favela, in Rio de Janeiro. Photo: AFP
A volunteer walks past a mural of the Brazilian flag as he disinfects an area at the Babilonia favela, in Rio de Janeiro. Photo: AFP
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