Bajo riesgo de contagio ambiental por SARS-CoV-2 en espacios no sanitarios / Low risk of environmental contagion by SARS-CoV-2 in non-sanitary spaces

Objetivo: Estudiar la presencia de SARS-CoV-2 en superficies (alto, medio y bajo contacto) y aires de espacios no sanitarios pero de elevada afluencia de público para evaluar el riesgo de contagio ambiental. Método: Se ha realizado el análisis de las superficies y de los aires por RT-qPCR para detectar la presencia de SARS-CoV-2. Resultados: Se obtuvieron 394 superficies y 23 muestras de aire de espacios de alta afluencia de personas, como oficinas, centros comerciales y residencias de ancianos. El virus no fue detectado en ninguna de las muestras analizadas. Conclusión: Aunque no podemos concluir rotundamente que no existe un riesgo de infección ambiental por SARS-CoV-2 en espacios no sanitarios, sí podemos afirmar que el riesgo es casi nulo.(AU)

Objective: To study the presence of SARS-CoV-2 on surfaces (high, medium and low contacts) and airs in non-sanitary spaces with high public influx to evaluate the risk of environmental contagion. Method: Surfaces and airs were analysed by RT-qPCR to detect the presence of SARS-CoV-2. Results: A total of 394 surfaces and air samples were obtained from spaces with high public influx such as offices, shopping centres and nursing homes. The virus was not detected in any of the samples analysed. Conclusion: Although we cannot emphatically conclude that there is no risk of environmental infection by SARS-CoV-2 in non-sanitary spaces, we can affirm that the risk is almost non- existent.(AU)

[Low risk of environmental contagion by SARS-CoV-2 in non-sanitary spaces]. / Bajo riesgo de contagio ambiental por SARS-CoV-2 en espacios no sanitarios.

Objective: To study the presence of SARS-CoV-2 on surfaces (high, medium and low contacts) and airs in non-sanitary spaces with high public influx to evaluate the risk of environmental contagion. Method: Surfaces and airs were analysed by RT-qPCR to detect the presence of SARS-CoV-2. Results: A total of 394 surfaces and air samples were obtained from spaces with high public influx such as offices, shopping centres and nursing homes. The virus was not detected in any of the samples analysed. Conclusion: Although we cannot emphatically conclude that there is no risk of environmental infection by SARS-CoV-2 in non-sanitary spaces, we can affirm that the risk is almost non- existent.

Low risk of environmental contagion by SARS-CoV-2 in non-sanitary spaces.

OBJECTIVE: To study the presence of SARS-CoV-2 on surfaces (high, medium and low contact) and airs in non-sanitary spaces with high public influx to evaluate the risk of environmental contagion. METHODS: Surfaces and airs were analysed by RT-qPCR to detect the presence of SARS-CoV-2. RESULTS: 394 surfaces and air samples were obtained from spaces with high public influx such as offices, shopping centres and nursing homes. The virus was not detected in any of the samples analysed. CONCLUSION: Although we cannot emphatically conclude that there is no risk of environmental 27 infection by SARS-CoV-2 in non-sanitary spaces, we can affirm that the risk is almost non- existent.

Detection of a Salmonella enterica serovar California strain spreading in spanish feed mills and genetic characterization with DNA microarrays.

We performed an epidemiological study on Salmonella isolated from raw plant-based feed in Spanish mills. Overall, 32 different Salmonella serovars were detected. Despite its rare occurrence in humans and animals, Salmonella enterica serovar California was found to be the predominant serovar in Spanish feed mills. Different typing techniques showed that isolates of this serovar were genetically closely related, and comparative genomic hybridization using microarray technology revealed 23 S. enterica serovar Typhimurium LT2 gene clusters that are absent from serovar California.