Lactococcus garvieae is a bacterial pathogen that affects different animal species in addition to humans. better you will go for genome sequence & antibiotic test.

To differentiate between pathogenic and non-pathogenic L. gravieae is as said Mr. Paulraj by genome sequence and antibiotic test. To make sure that L. garvieae as a bacterial pathogen that affects different animal species in addition to human as Mr Paulraj mentioned above, this bacteria must be checked by both genome sequence and antibiotic test. Those two check s were very important to know the strain type of L. gravieae owned by Prof. El-Baradei. The different strain type of L. gravieae may have resulted in the different character of L. gravieae whether this bacteria is pathogenic or non pathogenic bacteria. For example: E. coli in general is pathogenic bacteria, but there is E. coli with different strain found as non pathogenic bacteria

This may be done through antibiotic tests, gene sequencing as well as through PCR detection using specific primers that target genes specific for a particular virulence.