Study: Omicron variant is 'markedly resistant' to vaccine, booster shot

According to the study, existing antibody therapies like monoclonal antibody cocktails are largely ineffective against omicron, along with natural antibodies from previous infections.

LA County tightens rules for big events amid rising COVID numbers

As coronavirus cases climb in Los Angeles County, Public Health Director Barbara Ferrer announced new rules for large events that go into effect this week.

Omicron variant now makes up about 3% of US COVID-19 cases, CDC says

The CDC estimates that the new omicron variant of the coronavirus now makes up about 3% of COVID-19 cases reported nationwide.

In Depth: Omicron variant explained

Dr. Waxman says the Omicron variant doesn't appear to be as severe as the Delta variant, but it spreads more quickly.

Omicron variant appearing milder than delta, South African doctors say

In the two weeks since omicron first was reported in Southern Africa, other doctors have shared similar stories. All caution that it will take many more weeks to collect enough data to be sure, their observations and the early evidence offer some clues.

LA County confirms two more cases of COVID omicron variant, including local transmission

The LA County Department of Public Health confirmed two more cases of the COVID-19 omicron variant Friday. One case was from a traveler to Africa, the other a case of local transmission.

WHO warns omicron variant fears may set off hoarding of COVID-19 vaccines

The World Health Organization has expressed concerns that rich countries spooked by the emergence of the omicron variant could step up hoarding of COVID-19 vaccines.

LA County confirms locally acquired case of omicron COVID-19 variant

Los Angeles County reported its fourth case of the Omicron variant of COVID-19 Wednesday, saying the case is possibly the result of local transmission, unlike the previous infections that are believed to been travel-related.

Health officials confirm first case of omicron variant in Long Beach

Health officials announced the first case of the COVID-19 omicron variant in Long Beach Tuesday. The latest case of the new variant marks the fourth in Los Angeles County.

Omicron variant: Third case confirmed in Los Angeles County

Health officials in Los Angeles County have revealed a third case of the COVID-19 omicron variant has been reported in the area.

Los Angeles County confirms second omicron case

Los Angeles County has confirmed its second case of the omicron variant of COVID-19. The new patient is a college student who traveled to the East Coast over Thanksgiving. The person is fully vaccinated, had only mild symptoms and is in isolation.

Omicron variant brings new restrictions for air travelers to the US

The U.S. State Department has issued new travel requirements for any air travelers coming to the country. Now anyone two or older will have to show proof of a negative COVID test within one day of their flight.

5 in California contract omicron linked to Wisconsin wedding

 At least five people in Northern California have contracted the omicron variant of the coronavirus, and the outbreak is linked to a wedding in Wisconsin last month, public health officials said Friday.