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Official Covid-19 case metrics severely undercount the true number of infections, leaving the United States with a critical blind spot as the most transmissible coronavirus variant yet takes hold.
Repeatedly catching Covid-19 appears to increase the chances that a person will face new and sometimes lasting health problems after their infection, according to the first study on the health risks of reinfection.
The US Food and Drug Administration decided Thursday to advise manufacturers that when they update the Covid-19 vaccine booster they should add an Omicron BA.4/5 component to the current vaccine mix.
The United States is preparing for the possible need to update its Covid-19 vaccines.
UC Davis researchers have discovered that some of the best medicine to get you through a pandemic may not come in the form of a pill.
The Moderna and Pfizer/BioNTech Covid-19 vaccines are now authorized for emergency use in young children. The US Food and Drug Administration expanded the authorizations for the vaccines Friday to include children as young as 6 months.
California lawmakers on Thursday amended a bill that would have let preteens be vaccinated against a range of health conditions without their parents' consent, instead raising the proposed minimum age to 15, which would still be among the youngest in the U.S.
NIAID said Fauci found out that he was positive on a rapid antigen test. The director will work from home and follow agency protocol, returning to the National Institutes of Health campus only after he tests negative.
A government advisory panel Tuesday endorsed a second brand of COVID-19 vaccine for school-age children and teens.
Rep. Maxine Waters and Canadian Prime Minister Justin Trudeau have both tested positive again for COVID-19 after attending the Summit of the Americas in Los Angeles last week.
President Joe Biden's top health official has again tested positive for COVID-19, less than a month after he came down with virus symptoms while on a trip to Germany.
The Rolling Stones have canceled a concert in Amsterdam after lead singer Mick Jagger contracted Covid-19.
As counties assess risk levels with the new rise in COVID-19 cases, school districts are doing the same - given the large number of gatherings that will be taking place at the end of the school year.
The UC Davis Medical Center has hit an important milestone in the battle against COVID-19.
More than 34 million Americans age 50 and older could soon be eligible to receive another booster shot, after the Food and Drug Administration said Tuesday it had authorized a new round of the Moderna or Pfizer and BioNTech COVID-19 vaccines for those who want them.
The California Assembly has approved a measure extending the pandemic eviction moratorium -- just days before it's set to expire.
As rules soften and crowds return, the debate on masks is reigniting.
Masks are now optional on many public school campuses across California after the state's indoor mandate ended on Monday.
One frontline worker spoke about how she's weathered the past two years and how she's feeling about the future.
Citing a rapid decline in COVID-19 cases across the area, Sacramento State President Robert S. Neslen announced Thursday that the campus mask mandate will end after March 18.
Sacramento City Unified schools will be keeping their mask mandate in place at least until after spring break.
An Omicron-like variant of the virus that causes Covid-19 -- one that appears to be highly divergent from circulating strains and sticks out on a long branch of the virus' family tree -- has been discovered in a population of white-tailed deer in Ontario, Canada, according to a new study.
The new guidance makes masks recommended but not required, regardless of vaccination status. But many school districts are already bucking state guidelines, voting not to enforce the mandate long before it ends.
An El Dorado County restaurant that defied state COVID-19 rules is being ordered to shut down.
Nevada Union High School was left so short-staffed by teachers' absences Wednesday, hundreds of students had to sit in the school auditorium to watch a movie instead.
Miles Hastings threw three touchdown passes for UC Davis, but it was Lan Larinson's 59-yard touchdown run late in the fourth quarter that helped the Aggies hold off Sacramento State 42-39 in the 70th Causeway Classic on Saturday.
The $300 billion will go to developing countries who need the cash to wean themselves off coal, oil and gas.
A man died when he was found in a flooded vehicle after an atmospheric river dumped heavy rain in Northern California, authorities said.
Roseville police said one man died Friday night and another was injured when a Ferrari crashed.
The adoption ban would apply to at least 15 countries, most of them in Europe, and Australia, Argentina and Canada.
A driver was found dead in floodwaters after an atmospheric river dumped heavy rain in Northern California, authorities said.
Here's a look at 72-hour rain totals as of Friday night.
Sacramento State will host UC Davis for the 70th Causeway Classic on Saturday. You can watch the game on KMAX31.
The 70th annual Causeway Classic, a football tradition between UC Davis and Sacramento State, introduced some new action this year to their long-standing rivalry.
Miles Hastings threw three touchdown passes for UC Davis, but it was Lan Larinson's 59-yard touchdown run late in the fourth quarter that helped the Aggies hold off Sacramento State 42-39 in the 70th Causeway Classic on Saturday.
The Sacramento Police Department is trying out a new air asset that's designed to improve response times.
Last year, Sacramento had 55 traffic fatalities, which was an all-time high for the city. Now, the city is launching new traffic safety efforts to try and get that number down to zero.
Two people were shot and killed in the Northgate area of Sacramento, police said Tuesday.
The Sacramento City Council has given the green light for a cannabis lounge pilot program.
Sacramento city leaders on Tuesday will consider passing new rules cracking down on sideshows. It comes as the number of street takeovers continues to grow.
Thousands of University of California health and service workers have hit the picket line as of Wednesday morning.
Expect rounds of heavy rain and Sierra snow, flooding concerns and travel impacts through the weekend before Thanksgiving as atmospheric river moves through Northern California
The first case in the U.S. of a more severe strain of mpox was reported in San Mateo County, the California Department of Public Health said.
Elon Musk's social media platform X is suing California over a new state law targeting deceptive, AI-generated election content, claiming that it violates First Amendment free speech protections.
A U.S. Army soldier from Northern California who was captured during World War II and died as a prisoner of war in the Philippines has been accounted for, the Defense POW/MIA Accounting Agency (DPAA) announced Friday.
Miles Hastings threw three touchdown passes for UC Davis, but it was Lan Larinson's 59-yard touchdown run late in the fourth quarter that helped the Aggies hold off Sacramento State 42-39 in the 70th Causeway Classic on Saturday.
The 70th annual Causeway Classic, a football tradition between UC Davis and Sacramento State, introduced some new action this year to their long-standing rivalry.
Sacramento State will host UC Davis for the 70th Causeway Classic on Saturday. You can watch the game on KMAX31.
The High Wheelers, a professional baseball team that played in Davis last season, has found a new home in Northern California.
San Francisco 49ers quarterback Brock Purdy will miss Sunday's game against the Green Bay Packers with a sore throwing shoulder.
Scott Bessent, the founder of the Connecticut-based hedge fund Key Square Group, had been making a full-court press for the post.
Trump's sentencing in the "hush money" case has been delayed by a New York judge.
The Supreme Court issued its first opinion of the term, a one-line decision dismissing Facebook's appeal.
California Gov. Gavin Newsom traveled into a part of the state that supports President-elect Donald Trump Thursday, speaking about jobs in a county that flipped from Democrat to Republican support this election cycle.
President-elect Donald Trump made the announcement Thursday evening after Matt Gaetz withdrew himself from consideration.
A California child was confirmed to be the first U.S. child to become infected with bird flu, the U.S. Centers for Disease Control and Prevention announced Friday.
Whole Foods Market stores in five states sold recalled carrots and celery sticks that could contain E. coli.
Cold temperatures mean more people indoors, and more people indoors means more of a chance of spreading sickness.
The FDA sent a warning letter flagging "significant violations" of manufacturing regulations for Tom's of Maine toothpaste.
Officials with the California Department of Public Health (CDPH) said they have identified a possible bird flu case in a child in Alameda County.
A Fairfield couple had their home insurance policy canceled because of a photo taken from high above their residence. They called Kurtis when they thought the insurance carrier got it wrong.
Inflation and California's higher wages are driving up the cost of dining out, but the Call Kurtis team has found some relief for your wallet in the form of discount gift cards for restaurants.
A Sacramento mother is seeking answers—and justice—after discovering that her daughter's grave was moved without her knowledge.
A Lodi animal rescue and adoption agency said someone hijacked their Facebook page and is using it to rip people off. They reached out to the Call Kurtis team to look into it.
A Folsom viewer said a credit reporting agency is refusing to remove a debt that isn't hers. She reached out to the Call Kurtis team for help.
A Natomas mother demanded that her daughter be exhumed and cremated after a Sacramento cemetery moved her grave without telling the family.
No one — not the Governor's Office, the CHP task force, nor the attorney general — can tell us how many of the people arrested by California's Organized Retail Crime Task Force were sentenced, let alone how many went to jail, received treatment, or re-offended.
CBS News California examined retail theft rates in California and whether the high-profile Proposition 36 would help combat those crimes.
The CHP captain accused of workers' compensation fraud was the commander in charge of the fatal Mahaney Park shootout in Roseville, three officers who worked under him at the time of the shootout confirmed.
CBS News California takes a closer look at the drug component of the high-profile Proposition 36 to fact-check claims about the ballot measure from supporters and opponents.
After spending $18,000 on waterproof laminate floors, a Natomas couple spotted damage after the first cleaning.
More than a year after Hai Pham canceled the trial membership, he kept getting charged every month for it.
A Natomas mother demanded that her daughter be exhumed and cremated after a Sacramento cemetery moved her grave without telling the family.
The family contacted CBS13 and the Call Kurtis consumer investigative team to look into the matter.
The Call Kurtis team has found that some companies you may already be doing business with may offer streaming for free, or at deeply discounted rates.
The fire prompted a massive response from crews across the state, including five strike teams out of Auburn in Placer County.
The goal is to attract more women to the profession.
A new wildfire burning near the Nevada and Placer county line has forced officials to issue mandatory evacuations in both counties on Saturday.
As wildfires rage across California, new research reveals an alarming impact on one of the region's most vital industries: agriculture.
California voters will be asked to authorize the state to borrow $10 billion to pay for climate and environmental projects, including wildfire prevention.
It was a day of conquering fears and overcoming odds at the Sacramento Deep Water Channel this weekend. People living with physical disabilities got an opportunity to feel the exhilaration of setting sail.
A nutrition program to get kids excited about healthy eating in Yuba City is seeing success and now the farm-to-school program will be growing not just food but in size and opportunity.
Kids and teens in Stockton are flocking to a program that's offering them the opportunity of a lifetime.
More than one hundred customers came out to celebrate the grand reopening of a restaurant that's been around for seven decades.
Pursuing higher education can be challenging for any college-bound student and for former foster youth, doing it alone can seem impossible.
Rain froze over to ice but many people still drove up to the mountains to enjoy the snow.
Sacramento County crews used a break in the storm to prepare for the next one.
Carl Granderson is a Grant High alumni.
Miles Hastings threw three touchdown passes for UC Davis, but it was Lan Larinson's 59-yard touchdown run late in the fourth quarter that helped the Aggies hold off Sacramento State 42-39 in the 70th Causeway Classic on Saturday.
An atmospheric river dropped snow in the Sierra overnight.