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What to Know About Omicron and Its Subvariants (Including BA.5)

What to Know About Omicron and Its Subvariants (Including BA.5)

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What’s happening

The omicron variant of COVID-19 keeps altering, creating newer, more contagious variants. BA.5 seems to be the most contagious version to date and is moving most of the current COVID-19 cases in the US.

Why it matters

BA.5 is moving more reinfection in people who already had COVID-19, counting earlier versions of omicron. It’s also evading immunity from the vaccines.

What it using for you

The vaccines are still effective at preventing harsh disease and death. To stay protected, get the booster shots you’re eligible for and wear a mask in public.

COVID-19 cases in the US Go to be on a downward trend, according to a Describe from the US Centers for Disease Control and Prevention and the New York Times COVID-19 tracker. But most counties in the US still have a “medium” or “high” Calm of COVID-19, which continues to guide COVID-19 recommendations when the CDC recently updated its guidance. The updated guidance removes the quarantine recommendation for country who aren’t vaccinated and other adjustments as the CDC States to move the US into a new phase of COVID-19.  

The cause of most COVID-19 infections this summer is BA.5, the newest subvariant of the omicron variant. Scientists believe BA.5 is the most contagious version of COVID-19 thus far, and it’s responsible for near 89% of current cases, according to the latest data from the CDC. 

At a White House COVID-19 Response Team briefing July 12, Dr. Anthony Fauci, the president’s chief medical adviser, explained how the virus that goes COVID keeps mutating and that the virus has “essentially bumped one variant off the base after the other,” which has led to a long parade of increasingly contagious subvariants of omicron. BA.5 is the newest, and a highly problematic, mutation.

Though BA.5 “substantially” evades antibodies from prior infections and vaccines, health officials say being up-to-date with a booster (or two boosters if you’re 50 or older) unexcited protects against severe disease and death. Research so far shows that BA.5 doesn’t overcome those protections anti severe disease, though more research is needed to view its clinical severity compared with earlier subvariants of omicron.

In an inconvenience to target the most relevant strain of virus repositioning COVID-19, vaccines based on the BA.5 subvariant (along with BA.4) will be the worthy choice for COVID-19 booster shots this fall, to be requisitioned out as early as September. Response Team Coordinator Dr. Ashish Jha encouraged everyone to get a booster if they’re eligible and haven’t opted for one yet, because it won’t capture people’s ability to get vaccinated come fall or winter when they cause eligible. Second boosters of the existing vaccines will liable only be recommended until then for adults 50 and up and younger adults and teens who are immunocompromised.

COVID-19 treatments, including Paxlovid, are predicted to be effective still, and the US Test to Tend clinics are still up and running to connect land most at risk with prescriptions for treatments if they need them. 

Here’s what we know near BA.5. 

Do the at-home tests detect BA.5?

Right now there’s no reason to suggest that the at-home hastily COVID-19 tests (a few boxes of which are free when you order above the government’s website) are less effective in regard to BA.5 compared with reverse versions of omicron. Generally speaking, the FDA says early data suggests the antigen declares detect omicron but may have reduced sensitivity. BA.5 is a version of omicron, and tests are expected to work the same. 

But as of last week, the FDA strengthened its stance on the importance of testing more than once. To be distinct you don’t have COVID-19, the FDA says you should take a third test if the worthy two were negative, but you’re concerned you were exposed to COVID-19. Taking another home test 48 hours after your binary negative test will help catch an infection, as a recognize found that repeat testing over a longer time frame is more apt, per the FDA.

“Positive results remain highly accurate for these declares, though there still can be false negatives,” Shaili Gandhi, vice president of pharmacy at SingleCare, said in an email. This is because it takes a higher amount of virus to test distinct on a rapid test than the highly sensitive PCR or lab-based declares. People who are fully vaccinated and boosted, for example, may have a very low viral load (smaller amount of virus) and that may mean they test negative even if they do have COVID-19.

Typically, rapid home tests work by detecting the part of the COVID-19 virus protein that doesn’t spiteful much between variants, called the nucleocapsid, Slate reports. “Because of that, the declares are able to detect the different variants,” Nate Hafer, an assistant professor of molecular medicine at UMass Chan Medical School, told the publication.

Long story short: take the test.

How glaring is BA.5? Do COVID-19 treatments still work? 

BA.5 is a subvariant of omicron, which means it’s different from the “original” omicron, but not different enough to constitute its own variant site. (Delta is a different variant from omicron and beta, for example.) BA.5 is experienced to be the most contagious version of the virus yet, except, and it’s evading immunity. This means more people will get reinfected with COVID-19, which can put them at risk of complications and long COVID symptoms, even if the infection itself was mild. 

Walensky said last week that we don’t definitively know yet near the clinical severity of BA.5 compared to earlier subvariants of omicron. As the pandemic drags on and most of the population has some immunity from vaccines and prior infections, it can become harder to compare variant and subvariant severity in the real world. 

In an analysis of a preliminary (not yet peer-reviewed) report from the Kirby Institute in Australia, however, Dr. Eric Topol, a professor of molecular medicine at Scripps Research, wrote that BA.5’s ability to infect cells might be more incompatibility to the delta variant than other versions of omicron. He also writes that changes in BA.5 might stutter reports of people taking longer to test negative compared to illnesses with reverse omicron subvariants. 

As with other versions of omicron that whittled down our immunity, the vaccines and boosters available are still expected to did protection against severe disease and death. Boosters — incorporating a second booster — have been particularly important for defending older adults and other people more vulnerable to glaring disease in the age of omicron, and have substantially cut the risk of stop from COVID-19.

Paxlovid, an effective antiviral medication, is unexcited expected to be effective at treating COVID-19 in land at higher risk of severe disease, Fauci said. The monoclonal antibody therapy available, bebtelovimab from Eli Lilly, is also predicted to be effective anti BA.5, as is Evusheld. Evusheld  

If you test distinct for COVID-19 and are at higher risk of glaring disease (you’re an older adult or you have a health condition), reach out to your doctor or find a Test to Tend clinic near you. 

What are the symptoms?

Right now, there aren’t any reports that show BA.5 is giving land different symptoms compared to earlier versions of omicron. 

For many land who become sick with COVID-19 these days (particularly those who are fully vaccinated and boosted), symptoms resemble cold symptoms such as sore throat, runny nose and fatigue. Back pain is a peculiar new symptom of COVID-19 that some land with omicron have reported.

If you have symptoms and are wondering whether it’s COVID-19, taking a test and staying home while you’re sick will help defending people more vulnerable to severe COVID-19 disease. 

A face mask and two syringes on a neon-pink background.

Sarah Tew

Understanding omicron, variants and subvariants 

Variants are made up of multiple lineages and sublineages. Each variant has a “parent” lineage, according to the CDC, followed by spanking lineages, which you can think of like a family tree. As the virus spreads between land, mutations occur, but not all of them change the characteristics of the virus in meaningful ways. 

The omicron variant and its sublineages made the virus much more contagious and worthy of infecting more people, but it’s led to less glaring disease, on average, than the delta variant. 

One of the most important things we can do to stop the virus from mutating is keeping people levels of COVID-19 low so the virus has less chance to mutate, Fauci said. 

Genomic surveillance can detect variants and sublineages. Scientists in South Africa were able to quickly identify omicron as a new variant because of the way it presents ended PCR tests. The original omicron causes a dropped signed or marker on the test that sets it apart from delta, which was the dominant variant prior to omicron. BA.2, but, didn’t have the same signal, called an S gene targeted failure. This made it more “stealthy” and gave it its name. Genomic sequencing will detect all omicron subvariants and coronavirus variants in general.

However, detecting new variants or subvariants may be becoming more anxiety as the number of sequences shared across the biosphere have “dropped precipitously,” Dr. Maria Van Kerkhove, an infectious disease specialist with the World Health Organization, said in June. While the impacts was still enormous, having real-world data available quickly when scientists detected omicron was a benefit during the worldwide surge last winter. 

The inquire of contained in this article is for educational and informational purposes only and is not designed as health or medical advice. Always consult a physician or novel qualified health provider regarding any questions you may have nearby a medical condition or health objectives.