Low prevalence of Aichi virus in molluscan shellfish samples from Galicia (NW Spain).

AIMS

The aim of this study was to detect and quantify Aichi virus (AiV) in shellfish from three estuaries in Galicia, the main producer of molluscs in Europe.

METHODS AND RESULTS

A total of 249 shellfish samples were analysed using a reverse transcription-quantitative PCR procedure. AiV was detected in 15 of 249 (6·02%) samples. Ría de Ares-Betanzos showed the highest prevalence (11·1%), followed by Ría do Burgo (3·7%) and Ría de Vigo, (2·56%). AiV quantifications ranged from nonquantifiable (under the limit of quantification of the method) to 6·9 × 10 RNAc per g DT, with a mean value of 1·9 × 10 RNAc per g DT.

CONCLUSION

Results obtained indicated that the prevalence of this enteric virus in the studied area is considerably lower than those of other enteric viruses, such as Norovirus, Sapovirus, HAV or HEV.

SIGNIFICANCE AND IMPACT OF THE STUDY

This is the first study that detects the presence of AiV in shellfish from authorized harvesting areas in Spain. Further studies with clinical samples are needed to determine the potential risk of AiV for human health in Galicia.