The National Security Agency, as well as its counterparts in Britain and Canada, say they're seeing persistent attempts to hack into organizations working on a potential vaccine.
A coronavirus vaccine could become ineffective if the virus were to undergo certain genetic changes. But so far, so good: Scientists see no evidence that's happening.
Some of the technology behind coronavirus vaccine development dates back to the first vaccines; other techniques are much newer. Here are eight top strategies scientists are pursuing.
As Operation Warp Speed pushes to develop a COVID-19 vaccine in record time, the number of candidates is being narrowed. The factors guiding the decisions about which projects to fund is unclear.
Dr. Francis Collins says some candidates for a coronavirus vaccine will be ready to start large-scale human trials as early as next month. Scaling up production may start before tests are complete.
A survey by The Associated Press-NORC Center for Public Affairs Research finds 25% of black respondents plan to get a COVID-19 vaccine when one becomes available, compared to 56% of whites.
Dr. Anthony Fauci says it's "conceivable" a coronavirus vaccine could be ready within months but cautions "when you're dealing with vaccines, there could be so many things that get in the way."