The aircraft carrier USS Theodore Roosevelt docked at Naval Base Guam in Apra Harbor on April 27. Photo: Tony Azios/AFP via Getty Images

Thirteen sailors onboard the aircraft carrier U.S.S. Theodore Roosevelt have tested positive for the coronavirus for a second time, Politico reports. Those sailors had recently returned from over two weeks of self-isolation following earlier positive COVID-19 diagnoses.

The big picture: The initial virus outbreak on the ship led to Acting Navy Secretary Thomas Modly's early April resignation. He had relieved the Theodore Roosevelt's captain after the official pled for help due to members of his crew contracting the coronavirus.

What they're saying: “The five sailors developed influenza-like illness symptoms and executed their personal responsibility by reporting to medical for evaluation,” Navy spokesman Cmdr. Myers Vasquez told Task & Purpose in a statement when the initial news broke that sailors had tested positive again.

  • “The sailors were immediately removed from the ship and placed back in isolation, their close contacts were mapped, and they are receiving the required medical care.”
  • An additional 18 crew members who have not shown COVID-19 symptoms have also been removed from the ship, Task & Purpose reports.

One Navy sailor onboard the ship died in mid-April of complications from the virus.

Go deeper: Aircraft carrier infected with coronavirus to remove 2,700 members

Editor's note: This story has been updated to show that more sailors have tested positive again after recovered.

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Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

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By the numbers: Over 741,400 people have died of the novel coronavirus globally and more than 20.2 million have tested positive, per Johns Hopkins. Almost 12.6 million have recovered from the virus.

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Prime Minister Jacinda Ardern after a press conference at Parliament on July 22 in Wellington, New Zealand. Photo: Hagen Hopkins/Getty Images

AUCKLAND, New Zealand — Auckland is locking down and the rest of New Zealand faces lesser restrictions for 72 hours after a four members of the same family tested positive for COVID-19, Prime Minister Jacinda Ardern announced Tuesday.

Why it matters: It's the first cases not in managed isolation for 102 days, Ardern said at a news briefing.

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Fauci says he "seriously" doubts Russia's coronavirus vaccine is safe

NIAID director Anthony Fauci testifies during a July congressional hearing on Capitol Hill. Photo: Kevin DietschI/AFP via Getty Images

NIAID director Anthony Fauci cast doubt during a National Geographic discussion due to air this week on the effectiveness of Russia's registered coronavirus vaccine touted by President Vladimir Putin on Tuesday.

Why it matters: "Having a vaccine ... and proving that a vaccine is safe and effective are two different things," Fauci told told ABC News' Deborah Roberts in the discussion, expected to air on Thursday. His comments add to the weight of skepticism from scientists around the world on the Russia vaccine. There is no published scientific to support support Putin's claims.