What is a COVID-19 breakthrough case?
While breakthrough cases have become more common as the highly contagious delta variant spreads, the COVID-19 vaccines have still proven remarkably protective and effective against hospitalizations and deaths.
Latest LiveNOW Stories
What is a COVID-19 breakthrough case?
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From the Archives
Consumer & Money
Inflation rises, economy slows as Iran war continues
DeSantis pushes Florida property tax relief proposal
New poll shows economic confidence at 4-year low
Musk, SpaceX moving to launch highly anticipated IPO
Nvidia earnings surpass expectations amid AI chip boom
Trump admin grilled over beef prices as costs rise
Trump, Xi meet for last round of talks during summit
Trump makes historic visit to China for talks with Xi
Iran war major concern as Trump meets Xi in China
Economic impacts of Trump's high-stakes trip to China
Energy costs push inflation higher as war continues
Iran war triggers three-year high in US inflation
Trump on suspending federal gas tax
Trump will travel to China for critical meetings
U.S. added 115,000 jobs in April, beating expectations
Oil market eyes Trump's Strait of Hormuz aid plan
Powell to remain at Fed, setting up clash with Trump
Trump says he will impose 25% automobile tariff on EU
Powell nears end of term as Fed holds rates steady
United Arab Emirates announces OPEC exit this week
Science & Tech
Escaped emu evades Maryland police for hours
Yosemite faces big crowds after ditching reservations
Trump supports bill ending seasonal clock changes
Newsom moves on AI as Trump delays executive order
Nvidia earnings surpass expectations amid AI chip boom
Rare jaguar spotted roaming southern Arizona
Canvas online after hack impacts schools ahead of finals
Officer hoisted into crocodile-infested waters to recover human remains
Bull shark attacks fisherman's kayak
Trump hosts Artemis II astronauts at White House
Apple CEO Tim Cook confirms he will step down
Ukraine captures position with robot ground force
NASA prepares for Orion spacecraft’s return to Earth
Former NASA astronaut talks surviving in space
Artemis II crew take questions on way back to Earth
Artemis II crew prepares for Earth return, splashdown
Fisherman rescues shark caught on fishing line
Artemis II crew wraps moon flyby, heads for Earth
Trump speaks to Artemis II crew during moon mission
Artemis II swings around moon, begins journey home
Police Chases
LAPD chases restraining order violation suspect
Suspected DUI driver dances after LAPD pursuit
Police chase suspect takes off on foot
Suspect rams cars out of way
Suspect carjacks 3 vehicles during hour-long pursuit
High-speed motorcycle chase ends in violent crash
Viewer discretion: High-speed chase ends in crash
Pursuit leads to standoff in Hollywood Hills area
L.A. stolen car chase ends with suspect fleeing
Police pursue assault suspect in LA County
LAPD pursuit of carjacking subject ends on foot
Police chase in LA County ends with arrest
LA police pursuit ends with shootout on live TV
Gold minivan leads police on slow-moving chase
Northern L.A. pursuit ends with off-road accident
L.A. stolen-car chase ends with foot-pursuit arrest
Woman arrested after high-speed chase in California
Bus leads police on high-speed chase
High-speed LA police chase ends in wreck
Police chase suspected stolen pickup truck in LA
Weather Across the Country
Cars stuck in Atlanta flash flooding after heavy rain
Lava spews from Hawaii's Kilauea Volcano
Camp Mystic told to revise emergency plans to reopen
Early predictions for 2026 hurricane season
Hawaii continues to recover after historic flooding
Historic flooding in Hawaii prompts evacuations
Major heat wave shatters record highs in Southwest
Tornadoes, dangerous storm system slam Midwest
3 dead after tornado sweeps through Michigan
Hochul gives update on winter storm in New York
Historic blizzard forecasted to slam Northeast
Blizzard conditions expected for California mountains
Powerful coastal storm developing this weekend
Winter storm: Power outages persist, flights grounded
Beet juice used as eco-friendly option to avoid icy roadways
Millions brace for major winter storm in the US
Possible historic winter storm to impact millions
Winter weather impacts millions amid holiday travel
Powerful snow storm nears Northeast
