How COVID-19 vaccines work. The video shows the process of vaccination, from injection with RNA or viral vector vaccines, to uptake and translation, and on to immune system stimulation and effect. Map of countries by approval status Approved for general use, mass vaccination underway EUA (or equivalent) granted, mass vaccination underway EUA granted, limited vaccination Approved for general.
The CanSino Convidecia vaccine works similarly to other viral vector vaccines, like the AstraZeneca AZD1222 and Gamaleya Sputnik V vaccines. It uses a modified Ad5 virus containing the DNA instructions for the protein spikes of the SARS-CoV-2.
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