COVID-19 vaccines are now being administered in the UK and US, but the rollout may take years in poorer countries. Here are the major challenges they face.
COVID-19 vaccines are now being administered in the UK and US, but the rollout may take years in poorer countries. Here are the major challenges they face. insider@insider.com (Grace Dean) © Provided by Business Insider A young girl waits to be tested for COVID-19 in the Kibera slum in Nairobi, Kenya. Tony Karumba/AFP via Getty Images In December, the world watched as the UK and the US administered their first doses of Pfizer and BioNTech's COVID-19 vaccines. But lower-income countries may have to wait for years before they can vaccinate the majority of their population, re...