A New Wave of Vaccines Is Coming, and Theyâre Not All Also-Rans May 06 2021, 1:44 PM May 06 2021, 9:31 AM May 06 2021, 1:44 PM (Bloomberg Businessweek) -- The Covid-19 vaccine rollout has given drugmakers the kind of brand-name shorthand usually reserved for more mundane consumer products: People talk about getting Pfizer, Moderna, J&J, or Astra much as they might reach for a Kleenex or a Popsicle. And those companies have contracts to provide billions of doses, appearing to leave little room for other entrants. So why are dozens of hopefuls still working ... (Bloomberg Businessweek) -- The Covid-19 vaccine rollout has given drugmakers the kind of brand-name shorthand usually reserved for more mundane consumer products: People talk about getting Pfizer, Moderna, J&J, or Astra much as they might reach for a Kleenex or a Popsicle. And those companies have contracts to provide billions of doses, appearing to leave little room for other entrants. So why are dozens of hopefuls still working on shots?