Europe’s new surge is likely due to European leaders’ decisions to end all COVID-19 safety measures in their countries, combined with the rise of Omicron sublineage BA.2. As BA.2 prevalence increases here in the U.S.—and our leaders also end safety measures—we seem poised to follow in Europe’s footsteps once again. But a BA.2 surge is likely to look different from the intense Omicron surge that we experienced in December and January, in part because of leftover immunity from that Omicron surge.
What has the U.S. learned from the last two years, and what lessons can we take forward for future COVID-19 surges and other infectious disease outbreaks? The Biden administration has released a new pandemic preparedness plan that addresses these questions.
This week, the CDC added wastewater tracking to its COVID-19 data dashboard. Wastewater has been an important COVID-tracking tool throughout the pandemic, but it gained more public interest in recent months as Omicron’s rapid spread showed the utility of this early warning system. While the CDC’s new wastewater tracker offers a decent picture of national COVID-19 trends, it’s basically useless for local data in the majority of states.
An offshoot strain of the Omicron variant has been making headlines this week as it spreads rapidly in some European and Asian countries. While the strain, called BA.2 by virologists, has not yet been identified in the U.S. in large numbers, it’s already spreading here, too: scientists have picked it up in wastewater samples in some parts of the country.
Omicron is now causing nearly 100% of new COVID-19 cases in the U.S. Major Omicron news items for this week include the potential peak of the U.S.’s surge and real-world data from the CDC on how well booster shots work against this variant.
These update posts are getting shorter as time goes on, but we’re still learning about this variant! News items from this week include: Omicron now causing almost 100% of cases in the U.S., Northeast hotspots seem to be peaking, and more.
WWe keep learning about this dangerous variant as it spreads through the U.S. and the world. A few major updates from this week include Omicron’s enormous potential for transmission and the U.S.’s lack of preparedness.
We continue to learn more about this new variant as it spreads rapidly across the world, though much of the data are still preliminary. Here are a few major updates, including how vaccines fare against Omicron, its rapid spread, and more.
As the world waits for more information on Omicron, I’d like to give a shout-out to the scientists collecting data on this novel variant and sharing it with the public. As of today, over 500 Omicron sequences have been posted to the genome sharing site GISAID.
