Schmallenberg virus: research on viral circulation in Brazil

Schmallenberg virus (SBV— Orthobunyavirus serogroup Simbu) is an emerging RNA vector-borne virus which has an important impact in animal health within Europe, and some Asian and African countries. It is mainly reported in ruminants, causing congenital malformations and stillbirths. However, there ar...

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Bibliographic Details
Published in:Brazilian journal of microbiology 2022-03, Vol.53 (1), p.377-383
Main Authors: de Souza Nunes Martins, Maira, Pituco, Edviges Maristela, Taniwaki, Sueli Akemi, Okuda, Liria Hiromi, Richtzenhain, Leonardo José
Format: Article
Language:English
Subjects:
Animal health
Animals
Antibodies
Antibodies, Viral
Biomedical and Life Sciences
Blood
Brazil - epidemiology
Bunyaviridae Infections - diagnosis
Bunyaviridae Infections - epidemiology
Bunyaviridae Infections - veterinary
Cattle
Cattle Diseases
Congenital defects
Diagnostic systems
Fetuses
Food Microbiology
Life Sciences
Medical Microbiology
Microbial Ecology
Microbial Genetics and Genomics
Microbiology
Mycology
Orthobunyavirus - genetics
Polymerase chain reaction
Reverse transcription
RNA viruses
Ruminants
Sheep
Sheep Diseases - epidemiology
Veterinary Microbiology - Research Paper
Viruses
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Description
Summary:Schmallenberg virus (SBV— Orthobunyavirus serogroup Simbu) is an emerging RNA vector-borne virus which has an important impact in animal health within Europe, and some Asian and African countries. It is mainly reported in ruminants, causing congenital malformations and stillbirths. However, there are no studies regarding the occurrence, diagnosis, or surveillance of SBV in Brazil, due to the lack of diagnostic techniques available so far. This study aimed to implement a reliable diagnostic technique able to detect the SBV in Brazil and also to investigate occurrence of the virus in this country. A molecular technique, quantitative reverse transcription polymerase chain reaction (RT-qPCR), was used to analyze 1665 bovine blood samples and 313 aborted fetuses, as well as 596 serum samples were analyzed by serological analysis. None of the blood and fetus samples analyzed was positive for SBV, and neither serum samples were reactive for antibodies anti-SBV. Thus, although Brazil presents suitable conditions for the dissemination of the SBV, results of the present study suggest that SBV did not propagate in the analyzed bovine population.
ISSN:1517-8382
1678-4405
DOI:10.1007/s42770-021-00637-6