Oscar A. Ramirez-Vega

ORCID: 0000-0002-2246-4485
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About
Contact & Profiles
Research Areas
  • COVID-19 Clinical Research Studies
  • SARS-CoV-2 and COVID-19 Research
  • Animal Virus Infections Studies
  • COVID-19 and healthcare impacts
  • Viral gastroenteritis research and epidemiology
  • COVID-19 epidemiological studies
  • SARS-CoV-2 detection and testing
  • Immune responses and vaccinations

National Institute of Genomic Medicine
2021-2023

Instituto Nacional de Cancerología
2021-2023

The SARS-CoV-2 pandemic is one of the most concerning health problems around globe. We reported emergence variant B.1.1.519 in Mexico City. effective reproduction number (Rt) and presented evidence its geographical origin based on phylogenetic analysis. also studied evolution via haplotype analysis identified recurrent haplotypes. Finally, we clinical impact B.1.1.519. was predominant between November 2020 May 2021, reaching 90% all cases sequenced February 2021. It characterized by three...

10.3390/v13112182 article EN cc-by Viruses 2021-10-29

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causing disease 2019 (COVID-19) is the most transmissible ß-coronavirus in history, affecting all population groups. Immunocompromised patients, particularly cancer have been highlighted as a reservoir to promote accumulation of viral mutations throughout persistent infection.We aimed describe clinical course and SARS-CoV-2 mutation profile for 102 days an immunocompromised patient with non-Hodgkin's lymphoma COVID-19. We used...

10.3390/v15020377 article EN cc-by Viruses 2023-01-28

Abstract The SARS-CoV-2 pandemic is one of the most concerning health problems around globe. We report emergence variant B.1.1.519 in Mexico City. This represented up to 90% sequenced cases February 2021. It characterized by three amino acid changes spike protein: T478K, P681H, and T732A. effective reproduction number present evidence its geographical origin based on phylogenetic analysis. also studied evolution via haplotype analysis identified recurrent haplotypes. Finally, we clinical...

10.1101/2021.09.07.21262911 preprint EN cc-by-nc-nd medRxiv (Cold Spring Harbor Laboratory) 2021-09-14

Healthcare workers are at increased risk of SARS-CoV-2 infection. The positivity rates in hospitals that do not receive patients with COVID-19, such as the National Cancer Institute (INCan) Mexico, and associated factors unknown.To assess incidence infection health INCan.A cohort study 531 who were followed for 6 months. RT-PCR analysis saliva nasopharyngeal swab samples used baseline to confirm cases during follow-up rate ratio was calculated according measured characteristics using...

10.1016/j.ajic.2021.09.013 article EN other-oa American Journal of Infection Control 2021-09-20
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