I will appreciate explanation for conditions that must be fulfilled for a salmonella isolate to be categorised as a new serovar. I recently sent some isolates of salmonella for serotyping and the results came back with a few categorised as 'untypable'; while some are categorised as just 'salmonella enterica' without serovar names and the rest (majority) with various serovar names attached. I wonder if the 'untypable' isolates and/or others ('salmonella enterica' without serovar names) are probable new serovars!
With thanks
kayode
Basically, to recognize a isolate as a new serovar you have to know its antigenic structure. If it doesn't match with any listed in White-Kauffmann-Le Minore Scheme then you can suspect you have found a new one, but you should repeat identification to make sure it is authentic.Then you should contact with WHO Collaborating Centre for Reference and Research on Salmonella.
Recognision as "untypable" strain can result from being rough and problems with identification all or part of antigens. You should ask staff who did serotyping for more details.
This paper may be useful -
http://genomea.asm.org/content/3/2/e00215-15.long
It won't get a name-new serovars or variant servers now just get the antigenic formula
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