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Proactive: Teachers and support staff queue for the Covid-19 vaccination at Universitas Hospital in Bloemfontein in the face of the more transmittable Delta variant. (Mlungisi Louw/Gallo Images/Volksblad)
ALPHA

Covid-19 crash course: Everything you need to know about viruses, variants and vaccines

Covid-19 variants are new versions of the virus that are smarter at surviving. But before we can understand what these changed forms mean for vaccines, we first need to go back…

  • Belinda Beresford
13 min read