
CDC infectious disease data are starting to resume updates as the government shutdown ended last week, but some metrics remain unavailable. The data we do have suggest that we’re at the start of the U.S.’s winter COVID-19 wave, with cases rising particularly in the Northeast and Midwest, as well as a flu season that might…

In the arc of the bird flu in the U.S., 2024 to early 2025 was an explosive time. But then, last month, the CDC announced that it was ending its emergency response to the virus.

When H5N1 first landed in North America, borne on the wings of migratory birds blown off course from Europe in late 2021, Seema Lakdawala followed the developments closely, but she wasn’t overly worried about it leading to a pandemic in humans yet. There were still a few steps the highly pathogenic avian influenza needed to…

COVID-19 levels appear to be finally declining (albeit slowly) in the U.S. after a month of plateaus, with wastewater and healthcare system metrics both showing decreases in infections. Seasonal flu is also on the decline, following record levels in recent weeks. But both pathogens are still spreading at high levels and causing severe disease and…

COVID-19 levels remain elevated across the U.S., as our long winter surge continues. Wastewater and healthcare data indicate high and steady COVID-19 cases through early February, as well as an ongoing record-high seasonal flu season and threats of the bird flu H5N1.

COVID-19 levels remain high in the U.S. as our longer-than-usual winter surge continues. While disease spread is decreasing in some regions, that decline is offset by increases and plateaus in other parts of the country. We’re also seeing a record-high seasonal flu season, as concerns about the bird flu H5N1 continue to grow.

When a pandemic begins, so does the blame game. Early days of COVID-19 pointed fingers at wild meat markets and debunked lab leak conspiracies, and that crystallized a long-running narrative that outbreaks are generally humans’ fault; roll the dice enough times with wildlife and you’re bound to land on a plague. Problem is, generalizing that…

Our season of intense virus spread continues in the U.S. For now, we are still able to track that spread as major CDC data sources are (or at least appear to be) back to their regular update schedule following interruptions from the Trump administration. Some COVID-19 and flu indicators have gone back up this week,…

As usual for this time of year, we’re in the midst of a winter COVID-19 surge. Infections are increasing across the U.S., driven by holiday travel and gatherings; as data are reported with delays, it will be weeks before we see the full impact of the holidays on severe disease and deaths — and even…

Nearly a year into the first outbreak of the bird flu among cattle, the virus shows no sign of slowing. The U.S. government failed to eliminate the virus on dairy farms when it was confined to a handful of states, by quickly identifying infected cows and taking measures to keep their infections from spreading. Now…
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