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SARS epidemic continues

BMJ 2003; 326 doi: https://doi.org/10.1136/sbmj.0306178 (Published 01 June 2003) Cite this as: BMJ 2003;326:0306178
  1. Adrián González Aguirre1
  1. 1BMJ

Two strains of the virus responsible for severe acute respiratory syndrome (SARS) have been sequenced. As health authorities work to halt the epidemic, researchers from Canada and the United States have discovered the sequences of TOR2 and Urbani.

The TOR2 strain is made up of 29 751 bases and, apart from 8 bases, is identical to Urbani's sequence. The two teams disagree as to which is correct. No conclusive clues have been found concerning the potential animal origin of the pathogen. This coronavirus cannot be classified in the three known groups of the …

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