A large study of UK healthcare workers finds that immunity after coronavirus infection lasts for months, but those with antibodies may still be able to carry and spread the virus upon reexposure.

See a news report on a study of expectant mothers with SARS-CoV-2 infections.

From new treatments to an investigation into the virus’s origins, here are some of the developments we can expect this year.

Compared with Zika and cytomegalovirus, the virus that causes COVID-19 appears to have a harder time penetrating the placenta and moving to a woman’s unborn baby.

The virus rarely spreads from mother to child before birth, but it can—and researchers are starting to investigate the path it takes.

Variant B.1.1.7, though likely more contagious than other strains, does not appear to be more deadly.

In both Drosophila and mosquitoes, protection lasts for generations following a single maternal exposure to positive-sense single-stranded RNA viruses.

The gastrointestinal tracts of people with major depressive disorder harbor a signature composition of viruses, bacteria, and their metabolic products, according to the most comprehensive genomic and metabolomic analysis in depression to date.

A recent study sheds light on a previously unknown mechanism for fending off the pathogen, and potentially other viruses as well.