lines on the chart Can tell you something about the Covid pandemic in the US. Deaths: Down, even as the milestone of the 1 millionth U.S. death looms. Hospitalizations: At historic lows, but recovering. Cases: Rising, especially in the northeast, reliably predicts the rest of the country.

You can’t use these lines to map your path forward — because at this point, we’ve entered the “choose your own adventure” phase of the pandemic. Most mask orders have been lifted. Testing programs have been cut here and elsewhere. Congress has refused to fund much of the White House’s Covid agenda. Knowing where you’re at risk is more confusing than ever, and it’s likely to become more challenging as new variants are predicted to arrive.

All indicators point to the possibility of a new wave of Covid-19 in the United States; in some parts of the country, such a surge may have already arrived. But in our enthusiasm for declaring the pandemic over, we may have steered ourselves into a position where it is now harder to spot the coming wave. “There is an increasing relaxation of public health requirements and regulations, placing the onus on both individuals and employers,” said Saskia Popescu, an infectious disease epidemiologist and assistant professor at George Mason University. “But I note By the time we were relaxing those mandates, we were doing it at a time when the number of cases was already increasing.”

and case Yes increase in the United States. The 7-day moving average calculated by the Centers for Disease Control and Prevention was 42,605 last week, a 35% increase from a week earlier. The number of counties scoring both high and moderate on the CDC’s “Community Level” map increased last week.

All thanks to the Omicron variant that took the world by storm last November, and even more to its fast-rising descendants.What most of us think of as Omicron is scientifically known as BA.1; that was replaced January Pass the newer version BA.2. Omicron’s initial success and rapid spread of the laser were driven by its ability to generate immune protection around vaccination. Although it caused less severe illness, it caused so many cases that it overwhelmed hospitals. BA.2 did not exploit immune escape like BA.1 did, but it turned out to be more infectious than its already infectious predecessor. By mid-March, the World Health Organization reported that BA.2 had become the dominant strain globally.

At the same time, BA.3 emerged, followed by BA.4 and BA.5, rapidly replacing other southern African variants and migrating to other countries in EuropeAt the same time, the BA.2 variant with the technical name BA.2.12.1 is proliferating. It now accounts for nearly 29 percent of U.S. cases in the CDC’s weekly assessment released Tuesday.

These sub-variables are important for two reasons: First, each sub-variable indicates that SARS-CoV-2 is not going to lift the siege anytime soon. On Monday, evolutionary biologist Tom Wenseleers expected “A major wave occurs every six months with high mortality and morbidity.”