C
Chris Smith
Guest
- Moderna CEO Stephane Bancel said during an event that he expects the company’s coronavirus vaccine to offer protection for a couple of years.
- Coronavirus immunity remains a hot topic, as the virus is too new for researchers to offer accurate estimates.
- Several studies have shown recently that COVID-19 survivors still had a strong immune response up to eight months after the initial infection. As the illness ages, updated estimates will be available.
Western countries already have emergency access to three coronavirus vaccine candidates that have demonstrated effectiveness and safety in Phase 3 trials. These are the Pfizer/BioNTech, Moderna, and AstraZeneca/Oxford drugs that received emergency authorizations in several markets. The BioNTech and Moderna drugs are built on mRNA technology and offer similar efficacy, preventing severe COVID-19 in about 95% of cases each. The drugs have cleared the first regulatory hurdles in the US and Europe. The Oxford drug has lower efficacy and uses a different tech — only the UK and India have approved it. On top of that, Russia has its own vaccine that’s currently in use on the general population. China has several candidates that have shown promise in the early stages of clinical trials. Like Russia, China also started using vaccine candidates before Phase 3 trials were complete.
While Phase 3 trials offered various answers about efficacy and side effects, none of the companies who completed the research can explain how long COVID-19 immunity lasts. It should be clear that the vaccines do not prevent infection. They prevent the development of a severe version of the illness that can lead to death. Still, researchers can’t explain how long protection lasts, and the promising coronavirus immunity studies do not have a definitive answer. But Moderna CEO Stephane Bancel already has an estimate for the company’s mRNA vaccine.
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Moderna CEO says coronavirus vaccine should offer protection for two years originally appeared on BGR.com on Thu, 7 Jan 2021 at 13:33:23 EDT. Please see our terms for use of feeds.
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