This colorized scanning electron micrograph of a cell heavily infected with SARS-CoV-2 virus particles (orange/red) was captured at the NIAID Integrated Research Facility (IRF) in 2020. Photo: NIAID via ZUMA Wire/TNS
This colorized scanning electron micrograph of a cell heavily infected with SARS-CoV-2 virus particles (orange/red) was captured at the NIAID Integrated Research Facility (IRF) in 2020. Photo: NIAID via ZUMA Wire/TNS

Coronavirus: new Covid-19 variants emerge, likely reinfecting Omicron survivors

  • Current data do not suggest BA.4 and BA.5 cause people to get sicker than earlier Omicron variants, but BA.4 and BA.5 do appear to be more transmissible
  • One infectious disease expert says unvaccinated people will have a higher chance of not doing well if infected by the new variants

This colorized scanning electron micrograph of a cell heavily infected with SARS-CoV-2 virus particles (orange/red) was captured at the NIAID Integrated Research Facility (IRF) in 2020. Photo: NIAID via ZUMA Wire/TNS
This colorized scanning electron micrograph of a cell heavily infected with SARS-CoV-2 virus particles (orange/red) was captured at the NIAID Integrated Research Facility (IRF) in 2020. Photo: NIAID via ZUMA Wire/TNS
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