CDC Tracking New COVID-19 Subvariant

The new subvariant accounted for 7.2% of U.S. COVID-19 cases last week.

April 19, 2023

According to U.S. News and World Report, the U.S. Centers for Disease Control and Prevention (CDC) has added to its COVID-19 variant tracking list a new subvariant, which is responsible for a recent increase in cases nationwide.

The CDC reported that the new Omicron subvariant XBB.1.16 accounted for 7.2% of new COVID-19 infections last week—4% up from the previous week’s cases.

Another subvariant—Omicron subvariant XBB.1.9.1—was directly behind the new subvariant, with 6.5% attributable infections.

In its weekly COVID-19 tracker review, the CDC stated, “SARS-CoV-2, the virus that causes COVID-19, is constantly changing and accumulating mutations in its genetic code over time. New variants of SARS-CoV-2 are expected to continue to emerge. Some variants will emerge and disappear, while others will emerge and continue to spread and may replace previous variants.”

“XBB.1.5 became the dominant lineage over the past few months, but it is now starting to wane as other lineages rise. Newer lineages like XBB.1.9.2 and XBB.1.16, both close relatives of XBB.1.5, are starting to rise and could displace XBB.1.5.”

The CDC also noted, “Projections for an emerging lineage with a high growth rate may have a higher degree of uncertainty (wider predictive interval) when it is just beginning to spread and still has low weighted estimates. Projections may also be biased during times of delayed reporting (e.g., around holidays).”

Latest Articles

Shivek Gupta
July 10, 2025 Jeff Cross

The Buyer’s Playbook: What Makes a BSC Stand Out in Today’s Market

July 9, 2025 CMM Staff

BSCs Navigate Change

July 9, 2025 Dr. Gavin Macgregor-Skinner

Preparing Evacuation Shelters for Hurricanes and Other Natural Disasters

Sponsored Articles

Setting a New Standard for Restroom Dispensers
July 3, 2025 Sponsored by Tork, an Essity Brand

Setting a New Standard for Restroom Dispensers

July 3, 2025 Sponsored by SPARTAN CHEMICAL CO.

DfE-Certified Restroom Disinfectant—No PPE Required

July 3, 2025 Sponsored by SOFIDEL AMERICAN CORP

School District Cuts Plumbing Costs With Sofidel

Recent News

Texas flooding

Texas Flood Ranks as The Deadliest US Freshwater Flood in About 50 Years

US Hits Troubling Milestone

Medical Organizations Sue the HHS Over Vaccine Policy