Employees pack boxes containing vials of Covishield, a version of the AstraZeneca vaccine, at the Serum Institute of India in Pune on Monday, Nov. 22, 2021. AP PHOTO
NEW DELHI: The company behind a Covid-19 vaccine touted as a key tool for the developing world has sent tens of millions of doses to wealthy nations but provided none yet to the United Nations-backed effort to supply poorer countries, a sign that inequity persists in the global response to the pandemic.