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Omicron Variant

Here's where new COVID JN.1 variant is spreading in US

  • Dec 22, 2023
AP Photo/Seth Wenig

Everything you need to know about the new dominant COVID variant

  • Aug 9, 2023
AP Photo/Seth Wenig

WHO: XBB.1.5 is most transmissible omicron subvariant yet

  • Jan 9, 2023
AP Photo/Rick Bowmer

COVID subvariants: What to know and should you be concerned?

  • Oct 19, 2022

Updated COVID boosters now available in Chicago

  • Sep 6, 2022

US clears updated COVID boosters targeting newest omicron strain

  • Sep 1, 2022

New strategy for newly updated COVID booster amid variant surge

  • Jul 30, 2022

Why is the BA.5 COVID-19 variant so contagious?

  • Jul 13, 2022

Latest Videos

1:51

Updated COVID vaccine booster shots now available in Chicago

  • Sep 6, 2022
19:58

Lightfoot, Dr. Arwady update COVID vaccine booster rollout plan

  • Sep 6, 2022
1:20

Lightfoot, health officials to give COVID booster rollout update

  • Sep 6, 2022
1:07

Chicago health officials to detail COVID booster shot rollout plan

  • Sep 1, 2022
1:54

COVID booster: New strategy to push new Omicron-specific vaccine amid variant surge

  • Jul 30, 2022
1:54

Health officials urge COVID booster shots as BA.5 variant spreads

  • Jul 13, 2022
1:37

More COVID reinfections likely as virus keeps mutating

  • May 17, 2022
6:05

How has COVID impacted Chicago's Latino population?

  • Feb 15, 2022

Latest Stories

John Smith/VIEWpress

Undercounted COVID cases leave US with a blind spot as omicron subvariant BA.5 becomes dominant

The omicron offshoot BA.5 carries key mutations that help it escape antibodies generated by vaccines and prior infection.

  • Jul 11, 2022
Wang Ying/Xinhua via Getty Images

Americans keep getting reinfected with COVID-19 as new variants emerge, data shows

More than 1.6 million cases of reinfection have been reported across 24 states since data collection began, according to an ABC analysis.

  • Jun 9, 2022

Pfizer says its 3-shot COVID vaccine for kids 6 months to 5 years old 80% effective against omicron

Pfizer released long-awaited data for their vaccine for children 6 months to under 5 years old on Monday morning.

  • May 23, 2022

COVID reinfection likely to become more common without variant-specific vaccines, experts say

Infectious disease specialists say COVID reinfection is likely to become more and more common as the virus keeps mutating and our vaccines play catch-up.

  • May 17, 2022

Here's why some people still get COVID even after being vaccinated and double-boosted

"This (BA.2.12.1) is now the most transmissible subvariant we have of all," said Dr. Monica Gandhi of UCSF. "It now looks like it's 30% more transmissible than BA.2 alone."

  • May 10, 2022