Table 1.

Levels of bacteriophages recovered in urban sewage from the Barcelona area using different B. fragilishost strains

No. of strainsRange of PFU/mlaRatio of range of PFUs to numbers of bacteriophages detected by strain HSP40b
490 NCc
  • a Average value of at least two tests performed in duplicate.

  • b Phages infecting B. fragilisHSP40 were enumerated in all samples.

  • c NC, not calculable.