An elderly man questions a healthcare worker about the different vaccines available for them outside the Transvaco Covid-19 vaccine train stationed at the Springs Train Station outside of Johannesburg, on August 25, 2021. - Transvaco's role is purely to administer Covid-19 vaccines to communities which have limited healthcare resources. (Photo by Phill Magakoe / AFP) (Photo by PHILL MAGAKOE/AFP via Getty Images)