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Illustration: Sarah Grillo/Axios

Health care workers and those in other front-line, highly vulnerable sectors will likely benefit the most as new tests come on the market to determine whether a person has had the coronavirus.

The big picture: Serological testing, along with diagnostic testing and contact tracing, is one of the basic tools public health experts say are key to managing the pandemic.

Serological tests identify the antibodies a patient's body produces when it fights this strain of the coronavirus. They test for past infections, not current ones.

  • Some people likely contracted the coronavirus but didn't feel sick, or weren't able to get a diagnostic test. Serology tests will confirm whether they had it. And on a larger scale that will provide more information about where the virus spread, the real number of cases and the actual death rate from the virus.

Yes, but: “People just think this is the solution, that this is finally the thing, that everybody is going to have immunity passports … and I am very skeptical of this for a variety of reasons,” said Ashish Jha, professor of global health at the Harvard T.H. Chan School of Public Health.

  • “It’s going to have limited utility outside of hotspot cities and outside of professions where you’re going to see higher exposure,” former Food and Drug Administration Commissioner Scott Gottlieb told me.

Between the lines: Enthusiasm for serology tests as a way to help get people back to work is rooted in the belief that if you have antibodies for the virus in your system, you're immune from catching it again.

  • But we don't actually know whether that's true, or how strong that immunity might be.
  • And though the basic science is well-established, some officials, including Anthony Fauci, have cautioned the new tests haven’t yet been proven to work well.

Serology testing will be most useful in hotspots like New York City, Detroit, New Orleans, and Miami — areas where a larger percentage of the population has been infected.

  • And if the antibodies these tests detect do end up conferring immunity, the tests will be primarily helpful for workers who are at a particularly high risk of spreading the virus — including health care workers, first responders, grocery store workers and people who work with the elderly.
  • But “outside of the hotspots, I think that the overall rate of positivity is going to be sufficiently low that it’s not going to be a useful tool to return to work,” Gottlieb said.

The bottom line: The value here is in understanding the virus' true spread and helping the highest-risk workplaces operate more safely — not as any kind of universal, nationwide get-back-to-normal permit.

Go deeper: The next coronavirus test we need

Go deeper

Scoop: Gina Haspel threatened to resign over plan to install Kash Patel as CIA deputy

CIA Director Gina Haspel. Photo: Win McNamee/Getty Images

CIA Director Gina Haspel threatened to resign in early December after President Trump cooked up a hasty plan to install loyalist Kash Patel, a former aide to Rep. Devin Nunes (R-Calif.), as her deputy, according to three senior administration officials with direct knowledge of the matter.

Why it matters: The revelation stunned national security officials and almost blew up the leadership of the world's most powerful spy agency. Only a series of coincidences — and last minute interventions from Vice President Mike Pence and White House counsel Pat Cipollone — stopped it.

Updated 9 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Health: Coronavirus deaths reach 4,000 per day as hospitals remain in crisis mode — CDC warns highly transmissible coronavirus variant could become dominant in U.S. in March.
  2. Politics: Biden says, "We will manage the hell out of" vaccine distribution — Biden taps ex-FDA chief to lead Operation Warp Speed amid rollout of COVID plan — Widow of GOP congressman-elect who died of COVID-19 will run to fill his seat.
  3. Vaccine: Battling Black mistrust of the vaccines"Pharmacy deserts" could become vaccine deserts — Instacart to give $25 to shoppers who get vaccine.
  4. Economy: Unemployment filings explode againFed chair: No interest rate hike coming any time soon —  Inflation rose more than expected in December.
  5. World: WHO team arrives in China to investigate pandemic origins.

John Weaver, Lincoln Project co-founder, acknowledges “inappropriate” messages

John Weaver aboard John McCain's campaign plane in February 2000. Photo: Robert Schmidt/AFP via Getty Images)

John Weaver, a veteran Republican operative who co-founded the Lincoln Project, declared in a statement to Axios on Friday that he sent “inappropriate,” sexually charged messages to multiple men.

  • “To the men I made uncomfortable through my messages that I viewed as consensual mutual conversations at the time: I am truly sorry. They were inappropriate and it was because of my failings that this discomfort was brought on you,” Weaver said.
  • “The truth is that I'm gay,” he added. “And that I have a wife and two kids who I love. My inability to reconcile those two truths has led to this agonizing place.”