Microbiology & Norovirus
VeroMara provide microbiology testing for general food borne pathogens, and specialist shellfish E. coli and Norovirus testing. For further information on these pathogens we recommend the Bad Bug Book.
Our assay is used by the Cornish Shellfish Company, who
supply ![]()
Click here for a Fact Sheet on Norovirus.
| Test | Description | Application | Accreditation/Regulatory |
|---|---|---|---|
Norovirus |
RT-PCR assay for the detection of norovirus genogroups I and II. | End product testing of shellfish. | Based on CEN RT-PCR method for Norovirus. |
E. coli |
Most Probable Number (MPN) method for the enumeration of E.coli in shellfish. | End product testing of shellfish and classification of shellfish harvesting areas. | UKAS accredited; reference method for the classification of shellfish harvesting areas (as defined in ISO/TS 16649-3:2005). |
E. coli, coliforms, Enterobacteriaceae, aerobic colony count at 30°C and S. aureus |
Enumeration of E.coli, coliforms, Enterobacteriaceae, and S.aureus and an aerobic colony count at 30°C using the 3M Petrifilm culture system. | End product screen of shellfish and other food products. | AOAC approved method. |
E. coli and coliforms in Water |
Enumeration of E.coli and coliforms by membrane filtration. | Analysis of water samples. | N/A |
Presumptive Salmonella species in Shellfish and Other Food Products |
Cultural method for the detection of presumptive Salmonella species in molluscan shellfish and other food products. | End product testing. Note that this is a presence/absence test only. | AOAC approved method |
Presumptive Salmonella species in Food Preparation Areas |
Cultural method for the detection of presumptive Salmonella species in environmental swabs. | Environmental monitoring, assessment of food preparation areas and utensils. This is a presence/absence test only. | Based on ISO 6579:2002 and National Standard Method F13. |
Presumptive Salmonella species in Food and Environmental Samples |
RAPID Chromogenic Method for the detection of Salmonella species in food and environmental samples. | End product testing, environmental monitoring, assessment of food preparation areas and utensils. This is a presence/absence test only. | AOAC approved method. |
Listeria species and Listeria monocytogenes in Shellfish and Other Food Products |
Cultural method for the detection of Listeria species and Listeria monocytogenes in food products. | End product testing, presence/absence test. | AOAC approved method. |
Listeria monocytogenes in Environmental Swabs only |
Cultural method for the detection of Listeria monocytogenes in environmental swabs. | Environmental monitoring, assessment of food preparation areas and utensils. This is a presence/absence test only. | AOAC approved method. |
Presumptive Vibrio species and Vibrio parahaemolyticus in Shellfish |
Detection of presumptive Vibrio species after sample enrichment. Analysis of presumptive Vibrio species by PCR to detect the presence of V. parahaemolyticus. | End product testing. | N/A |
E.coli O157 |
Cultural method to detect and isolate non-sorbitol-fermenting strains and then analysis of isolates using latex agglutination to detect presence/absence of E.coli serogroup O157. | End product testing. | N/A |


