A person in protective gear inside a kiosk swabs the mouth of a customer.

How quickly does COVID immunity fade? What scientists know

Vaccination, infection with SARS-CoV-2 and a combination of both provide varying degrees of protection.


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  • A recently discovered high-mass X-ray binary has an evolutionary history showing the neutron star component formed during an ultra-stripped supernova, and has orbital elements that should allow for forming a binary neutron star in the future.

    • Noel D. Richardson
    • Clarissa M. Pavao
    • Jeremy Hare
  • Philological analysis of labels and instructions, together with gas chromatography–mass spectrometry analysis of residues on vessels recovered from a 26th Dynasty embalming workshop at Saqqara, Egypt provide insights into ancient Egyptian embalming practices.

    • Maxime Rageot
    • Ramadan B. Hussein
    • Philipp W. Stockhammer
    Article Open Access
  • A type of universal scattering resonance between ultracold microwave-dressed polar molecules associated with field-linked tetramer bound states in the long-range potential well is observed, providing a general strategy for resonant scattering between ultracold polar molecules.

    • Xing-Yan Chen
    • Andreas Schindewolf
    • Xin-Yu Luo
    Article Open Access


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