tetano
Editor, Senior Moderator
Microbiol Spectr
. 2022 Jan 12;e0124921.
doi: 10.1128/spectrum.01249-21. Online ahead of print.
Genomic Characterization of SARS-CoV-2 Isolated from Patients with Distinct Disease Outcomes in Mexico
Celia Boukadida[SUP] #[/SUP][SUP] 1 [/SUP], Blanca Taboada[SUP] #[/SUP][SUP] 2 [/SUP], Marina Escalera-Zamudio[SUP] 3 [/SUP], Pavel Isa[SUP] 2 [/SUP], José Ernesto Ramírez-González[SUP] 4 [/SUP], Joel Armando Vazquez-Perez[SUP] 5 [/SUP], José Esteban Muñoz-Medina[SUP] 6 [/SUP], Concepción Grajales-Muñiz[SUP] 7 [/SUP], Carolina González-Torres[SUP] 8 [/SUP], Francisco Javier Gaytán-Cervantes[SUP] 8 [/SUP], Alma Rincón-Rubio[SUP] 1 [/SUP], Margarita Matías-Florentino[SUP] 1 [/SUP], Héctor Esteban Paz-Juárez[SUP] 1 [/SUP], Alejandro Sanchez-Flores[SUP] 9 [/SUP], Edgar Mendieta-Condado[SUP] 4 [/SUP], Gisela Barrera-Badillo[SUP] 4 [/SUP], Lucía Hernández-Rivas[SUP] 4 [/SUP], Susana López[SUP] 2 [/SUP], Irma López-Martínez[SUP] 4 [/SUP], Santiago Ávila-Ríos[SUP] 1 [/SUP], Carlos F Arias[SUP] 2 [/SUP]
Affiliations
Abstract
The coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has shown a wide spectrum of clinical manifestations ranging from asymptomatic infections to severe disease and death. Pre-existing medical conditions and age have been mainly linked to the development of severe disease; however, the potential association of viral genetic characteristics with different clinical conditions remains unclear. SARS-CoV-2 variants with increased transmissibility were detected early in the pandemics, and several variants with potential relevance for public health are currently circulating around the world. In this study, we characterized 57 complete SARS-CoV-2 genomes during the exponential growth phase of the early epidemiological curve in Mexico, in April 2020. Patients were categorized under distinct disease severity outcomes: mild disease or ambulatory care, severe disease or hospitalized, and deceased. To reduce bias related to risk factors, the patients were less than 60 years old and with no diagnosed comorbidities A trait-association phylogenomic approach was used to explore genotype-phenotype associations, represented by the co-occurrence of mutations, disease severity outcome categories, and clusters of Mexican sequences. Phylogenetic results revealed a higher genomic diversity compared to the initial viruses detected during the early stage of the local epidemic. We identified a total of 90 single nucleotide variants compared to the Wuhan-Hu-1 genome, including 54 nonsynonymous mutations. We did not find evidence for the co-occurrence of mutations associated with specific disease outcomes. Therefore, in the group of patients studied, disease severity was likely mainly driven by the host genetic background and other demographic factors. IMPORTANCE The genetic association of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) with different clinical conditions remains unclear and needs further investigation. In this study, we characterized 57 complete SARS-CoV-2 genomes from patients in Mexico with distinct disease severity outcomes: mild disease or ambulatory care, severe disease or hospitalized, and deceased. To reduce bias related to risk factors the patients were less than 60 years old and with no diagnosed comorbidities. We did not find evidence for the co-occurrence of mutations associated with specific disease outcomes. Therefore, in the group of patients studied, disease severity was likely mainly driven by the host genetic background and other demographic factors.
Keywords: Mexico; SARS-CoV-2; distinct clinical outcomes; genomic diversity.
. 2022 Jan 12;e0124921.
doi: 10.1128/spectrum.01249-21. Online ahead of print.
Genomic Characterization of SARS-CoV-2 Isolated from Patients with Distinct Disease Outcomes in Mexico
Celia Boukadida[SUP] #[/SUP][SUP] 1 [/SUP], Blanca Taboada[SUP] #[/SUP][SUP] 2 [/SUP], Marina Escalera-Zamudio[SUP] 3 [/SUP], Pavel Isa[SUP] 2 [/SUP], José Ernesto Ramírez-González[SUP] 4 [/SUP], Joel Armando Vazquez-Perez[SUP] 5 [/SUP], José Esteban Muñoz-Medina[SUP] 6 [/SUP], Concepción Grajales-Muñiz[SUP] 7 [/SUP], Carolina González-Torres[SUP] 8 [/SUP], Francisco Javier Gaytán-Cervantes[SUP] 8 [/SUP], Alma Rincón-Rubio[SUP] 1 [/SUP], Margarita Matías-Florentino[SUP] 1 [/SUP], Héctor Esteban Paz-Juárez[SUP] 1 [/SUP], Alejandro Sanchez-Flores[SUP] 9 [/SUP], Edgar Mendieta-Condado[SUP] 4 [/SUP], Gisela Barrera-Badillo[SUP] 4 [/SUP], Lucía Hernández-Rivas[SUP] 4 [/SUP], Susana López[SUP] 2 [/SUP], Irma López-Martínez[SUP] 4 [/SUP], Santiago Ávila-Ríos[SUP] 1 [/SUP], Carlos F Arias[SUP] 2 [/SUP]
Affiliations
- PMID: 35019701
- DOI: 10.1128/spectrum.01249-21
Abstract
The coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has shown a wide spectrum of clinical manifestations ranging from asymptomatic infections to severe disease and death. Pre-existing medical conditions and age have been mainly linked to the development of severe disease; however, the potential association of viral genetic characteristics with different clinical conditions remains unclear. SARS-CoV-2 variants with increased transmissibility were detected early in the pandemics, and several variants with potential relevance for public health are currently circulating around the world. In this study, we characterized 57 complete SARS-CoV-2 genomes during the exponential growth phase of the early epidemiological curve in Mexico, in April 2020. Patients were categorized under distinct disease severity outcomes: mild disease or ambulatory care, severe disease or hospitalized, and deceased. To reduce bias related to risk factors, the patients were less than 60 years old and with no diagnosed comorbidities A trait-association phylogenomic approach was used to explore genotype-phenotype associations, represented by the co-occurrence of mutations, disease severity outcome categories, and clusters of Mexican sequences. Phylogenetic results revealed a higher genomic diversity compared to the initial viruses detected during the early stage of the local epidemic. We identified a total of 90 single nucleotide variants compared to the Wuhan-Hu-1 genome, including 54 nonsynonymous mutations. We did not find evidence for the co-occurrence of mutations associated with specific disease outcomes. Therefore, in the group of patients studied, disease severity was likely mainly driven by the host genetic background and other demographic factors. IMPORTANCE The genetic association of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) with different clinical conditions remains unclear and needs further investigation. In this study, we characterized 57 complete SARS-CoV-2 genomes from patients in Mexico with distinct disease severity outcomes: mild disease or ambulatory care, severe disease or hospitalized, and deceased. To reduce bias related to risk factors the patients were less than 60 years old and with no diagnosed comorbidities. We did not find evidence for the co-occurrence of mutations associated with specific disease outcomes. Therefore, in the group of patients studied, disease severity was likely mainly driven by the host genetic background and other demographic factors.
Keywords: Mexico; SARS-CoV-2; distinct clinical outcomes; genomic diversity.