Gamma variant

• gamma variant, Gamma Variant, γ variant, γ-variant, Γ variant, Γ-variant

Gamma variant

1. (medicine, virology) The highly virulent P.1 strain of the SARS-CoV-2 virus that causes COVID-19.

   Synonyms: gamma, Brazilian variant

   • 2021 August 20, Ranzani, Otavio T., et al., “Effectiveness of the CoronaVac vaccine in older adults during a gamma variant associated epidemic of covid-19 in Brazil: test negative case-control study”, in bmj, volume 374, →DOI:

     Variants of concern, and in particular the gamma variant, have played an important role in the recent epidemic wave in Brazil, which began in early 2021.

   • 2022 January, da Silva, Juliana F., et al., “Cluster of SARS-CoV-2 Gamma Variant Infections, Parintins, Brazil, March 2021”, in Emerging infectious diseases, volume 28, →DOI, page 262:

     Among 45 persons tested with variant-of-concern RT-PCR, whole-genome sequencing, or both, the Gamma variant was detected for 68.9%.

   • 2022 August 19, de Fátima Cobre, Alexandre, et al., “The impact of COVID-19 vaccine rejection on hospital admission and variants spread worldwide: implications for healthcare policy”, in Research, Society and Development, →DOI, page 1:

     The percentage of the unvaccinated population had a significant effect on the increase in ICU admissions and on the increase of omicron, alpha, delta, and gamma variant cases.