A year of scientific uncertainty is over. Two vaccines look like they will work, and more should follow.

Blood samples from recovered patients suggest a powerful, long-lasting immune response, researchers reported.

Immunity to the novel coronavirus may last eight months or longer, according to a new study authored by respected scientists at leading labs, which found that individuals who recovered from the coronavirus developed “robust” levels of B cells and T cells (necessary for fighting off the virus) and “these cells may persist in the body for a very, very long time.”

San Diego scientists and trial participants are cautiously optimistic after early reports that Pfizer’s COVID-19 vaccine is highly effective

The body’s immune system is immensely intricate. A new study released in the UK is causing a stir because of what it says about possible limits to our immunity to COVID-19. Dr. Alessandro Sette talks with The World’s Marco Werman about what the study’s results mean for the possibility of a strong coronavirus vaccine.