Tris stabilized AuNPs based lateral flow immunochromatography for the simultaneous detection of porcine epidemic diarrhea virus and rotavirus on-site.

Porcine epidemic diarrhea virus (PEDV) and rotavirus has posed a significant threat to the pig industry annually across different nations, resulting in huge economic losses. The frequent co-infection of these two viruses in clinical settings complicates the process of differential diagnoses. Rapid and accurate detection of PEDV and rotavirus is in great demand for timely diarrhea disease prevention and control. In this study, tris stabilized AuNPs were prepared and a sensitive lateral flow immunoassay (LFIA) sensor was developed for the simultaneous and rapid detection of PEDV and rotavirus on site. After the system optimization, the established LFIA can simultaneously identify PEDV and rotavirus with limits of detection (LOD) of 1.25 × 103 TCID50 mL-1 and 3.13 × 102 pg mL-1, respectively. When applying for clinical samples, the LFIA show a concordance of 95 % and 100 % to reverse transcript polymerase chain reaction (RT-PCR) for PEDV and rotavirus respectively. Therefore, this LFIA can qualitatively detect PEDV and rotavirus in 18 min with high sensitivity and accuracy without any sophisticated equipment and operation, making it a promising candidate for the early diagnosis of PEDV or/and rotavirus diarrhea on site.

Complete Genome Sequence of a Novel Porcine Circovirus Type 3 Strain, CH/GX/1776D/2017, Isolated from Guangxi, China.

Porcine circovirus type 3 (PCV3) was first described in 2016 in U.S. swine herds as a pathogenic agent for pigs. To date, PCV3 has been reported to be widely circulating in the United States, China, South Korea, Brazil, Italy, and Poland. Here, we report the genome sequence of a PCV3 strain (CH/GX/1776D/2017) isolated from Guangxi Province in southern China. The sequence data presented in this study will help us better understand the molecular characteristics and genetic diversity of PCV3 in China.

Full-Length Genome Sequence of Japanese Encephalitis Virus Strain FC792, Isolated from Guangxi, China.

We report here the complete genomic sequence of Japanese encephalitis virus (JEV) strain FC792, isolated from aborted fetuses of sows which were unimmunized with JEV vaccines in Guangxi Province, southern China. The complete JEV genome of strain FC792 had the highest nucleotide homology (99.7%) and amino acid identity (99.4%) with the sequence of JEV strain SA14-14-2 (GenBank accession number AF315119). Phylogenetic analysis showed that strain FC792 had the closest phylogenetic relationship to the sequence of strain YUNNAN0901 (GenBank accession number JQ086762). This study will help us understand the molecular pathogenesis and genetic diversity of genotype III Japanese encephalitis virus in pigs.

Full-Length Genome Sequence of Porcine Epidemic Diarrhea Virus Strain CH/GX/2015/750A.

We report here the complete genome sequence of porcine epidemic diarrhea virus (PEDV) strain CH/GX/2015/750A (750A), which was isolated from a suckling piglet with watery diarrhea in Guangxi, China. The isolate is genetically close to other recent Chinese variant PEDVs and distinct from the classical PEDVs.

Complete genome sequence of porcine parvovirus N strain isolated from guangxi, china.

We report here the complete genomic sequence of the porcine parvovirus (PPV) N strain, isolated in 1989 from the viscera of a stillborn fetus farrowed by a gilt in Guangxi, southern China. Phylogenetic analyses suggest that the PPV-N strain is closely related to attenuated PPV NADL-2 strains. The PPV-N strain has good immunogenicity, genetic stability, and safety.