![]() As of January 20, 2020, a total of 201 cases of pneumonia in China have been confirmed. A cluster of pneumonia cases with an unknown cause occurred in Wuhan starting on December 21, 2019. The new types of Betacoronavirus, labelled with red stars, were placed into the lineage of Betacoronavirus 2b, which contain the following: avian infectious bronchitis virus (AIBV), Middle East respiratory syndrome coronavirus (MERS-CoV), mouse hepatitis virus (MHV), porcine enteric diarrhea virus (PEDV), severe acute respiratory syndrome coronavirus (SARS-CoV), SARS-related coronavirus (SARSr-CoV), and Human coronavirus (HCoV).Įmerging and re-emerging pathogens are great challenges to the public health ( 1). The tree was based on complete genomes shown above using the maximum likelihood method under the GTR + I + Γ model of nucleotide substitution as implemented in PhyML. ![]() Classic subgroup clusters for the Betacoronavirus were labelled 2a–2d. The viruses in the subfamily Orthocoronavirinae were classified into four genera (prototype or Refseq strains shown): Alphacoronavirus (purple), Betacoronavirus (orange), Gammacoronavirus (green), and Deltacoronavirus (blue). Phylogenetic relationships between the genomes of the new types of Betacoronavirus and other Orthocoronavirinae genomes.
0 Comments
Leave a Reply. |