Adenovirus vectors deliver the genetic instructions for SARS-CoV-2 antigens directly into patients’ cells, provoking a robust immune response. But will pre-existing immunity from common colds take them down?

A study of Nicaraguan children links prior Zika virus infection with aggravated dengue fever symptoms.

An absence of germinal centers—which arise during infections to produce long-lived antibody-generating cells—might explain rapidly waning antibody levels in the disease.

White House officials hail convalescent plasma as a major breakthrough, but scientists say evidence supporting its effectiveness is still lacking.

Researchers say the popularity of convalescent plasma makes it more difficult to gather high-quality data on its efficacy.

In most vertebrates, the absence of adaptive immunity would be catastrophic, but in some deep-sea angler fish species, it enables their “wild” and “wacky” mating habits.

Actual cases may be as much as 6 to 24 times higher than reported, but we’re still a long way off from herd immunity.