Jeremy Singer-Vine contributed reporting for this story.
One vaccine, from the Indian company Zydus Cadila, delivers a genetic sequence that makes a viral protein inside loops of DNA. We find that the impact of behaviour is amplified when the vaccine rollout is slower, when the top-down measures are less strict or when a vaccination. Other leading vaccines are based on inactivated versions of the coronavirus, a longstanding approach to making vaccines, or subunits of viral protein. A registered nurse applies a dose of the Moderna COVID-19 vaccine to Sarasota Hospital worker Larry Hammers, 62, at the Sarasota Memorial Hospital in Sarasota, Florida, September 24, 2021. Each member state is managing distribution with a common focus on prioritizing healthcare workers, people at high risk of exposure, the elderly, and those with serious health conditions. Examples of such vaccines include those produced by the Anglo-Swedish company AstraZeneca, based on research from Oxford University, Johnson & Johnson, and Russia’s Gamaleya Research Institute. The European Union began phased vaccine rollout on 27 December 2020. The drawback is that these vaccines are more expensive than those made by splicing genetic material from the coronavirus into a disabled version of another virus. Fauci says all Americans could have access to a COVID-19 vaccine. The highly effective vaccines from Pfizer/BioNTech and Moderna are based on a new technology that delivers a sequence of RNA that makes our own cells produce viral protein, triggering an immune response. This table documents the status of leading COVID-19 vaccines, showing authorizations for use in the US and other selected markets plus prices from information on purchase agreements compiled by UNICEF, where available.
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