“The omicron variant has helped drive the United States into uncharted territory for the pandemic. The country was reporting an average of more than 400,000 new Covid-19 cases every day as of January 3, easily eclipsing last winter’s record of 250,000. And infections are still spiking, with the number of newly reported cases quadrupling since the beginning of December.
There is still a lot of uncertainty with the omicron variant: We’re still learning exactly how transmissible it is, how likely it is to cause severe disease and for whom. But we know more now than we did when it first began spreading in the US.
All the early indications were that omicron was even more transmissible than its predecessors, at least in part because of its ability to partially evade preexisting immunity, and that has proven to be true. While earlier CDC estimates that the variant took over in the US in mid-December turned out to be overstated, omicron now appears to have surpassed the previously dominant delta variant in its share of new US cases.
With cases rising, so is the number of patients in the hospital with Covid-19. But, at least so far, hospitalizations are not rising as rapidly as infections, lending credence to the theory that omicron leads to less severe disease, particularly for vaccinated people. Deaths have barely budged over the last month, with about 1,250 new deaths being reported every day as of January 3, essentially unchanged from the 1,125 daily average on December 3. While there is always a time lag between new reported cases and the data showing more serious illness, the evidence, including biological research findings, that omicron poses less of a threat to each individual patient is only growing.”