Data from new studies conducted by the Centers for Disease Control and Prevention (CDC) show that a Covid-19 vaccine booster shot offers significant protection against serious infection from Omicron.
The omicron variant of Covid has become the most dominant strain in the world since it first emerged three months ago in South Africa. The CDC’s three new studys’ data is significant since it represents the first study conducted on Omicron using real-world information, tracking Covid-19 hospitalizations from August 2021 to January 2022, the window of time in which Omicron took over dominance from the Delta variant.
The first study found that two doses of an mRNA Covid vaccine were still 76 percent effective against the Delta variant six months after being administered, but that efficacy dropped to 38 percent against Omicron. A booster shot of the vaccine was found to cause protection against Omicron to rise to 82 percent.