The XFG “Stratus” COVID-19 variant is officially strutting into the pandemic spotlight. It is new, it is bold, and according to the latest data from the Centres for Disease Control and Prevention (CDC), it is now the third most common variant in the US. But it is popping up in certain states more than others, and the way it announces its arrival could be by making your throat feel like you have swallowed a box of sandpaper.While the national Covid-19 test positivity rate sits in the 5–9.9 per cent range, a dozen states are seeing significantly higher numbers.According to CDC data, the states with the highest positivity rates are:New Mexico (12%)Texas (12%)Oklahoma (12%)Arkansas (12%)Louisiana (12%)Nevada (11.3%)Arizona (11.3%)California (11.3%)Alaska (11.1%)Washington (11.1%)Oregon (11.1%)Idaho (11.1%)These states are not just reporting higher numbers but are also providing ideal conditions for Stratus to spread. With case trends officially “growing” according to the CDC, it is a situation that demands close attention.Stratus is a variant under monitoring by the World Health Organisation (WHO). First detected in January, XFG Stratus now accounts for about 14 per cent of Covid cases in the US.While theW says the health risk from Stratus remains low at a global level, this variant is still on a growth spurt, outpacing other circulating forms of the virus, including its sibling, the “Nimbus” NB.1.8.1 variant. The concerning bit is that the WHO says Stratus could be more adept at sidestepping immune defences. The reassuring bit is that the current vaccines are expected to continue protecting against symptomatic and severe disease caused by Stratus.Spotting Unique Stratus Symptoms The tricky thing about Stratus is that it is not trying to reinvent the Covid symptom wheel. According to experts, its symptoms look suspiciously similar to other recent Omicron descendants. But there is one possible stand-out, a sensation some patients are calling “razor blade throat”.Here’s the full checklist:Sore throat (sometimes severe)CoughCongestion or runny noseFever or chillsShortness of breathLoss of taste or smellFatigueHeadacheMuscle achesNausea, vomiting or diarrhoeaThe “razor blade throat” description might sound too much, but anyone who has had that burning, scratchy pain knows it is no joke. Hoarseness has also been reported more often lately. Still, a sore throat has been a hallmark Covid symptom since the early days of the pandemic; Stratus just seems to be leaning into it.Why the Positivity Spike MattersHigher positivity rates do not just mean more people are testing positive; they can also signal under-testing. If more than 10 per cent of people tested are infected, it suggests many cases are flying under the radar, which means more opportunities for the virus to spread unchecked. That is especially risky when you have a variant with a knack for growing its share of cases quickly, like Stratus.The fact that 12 states are sitting above the 11 per cent mark means public health teams will be watching these regions closely in the coming weeks. In the meantime, everyday precautions like masking in crowded places, testing if symptomatic, and staying up to date with vaccines remain the best tools in the toolbox.Stratus vs. NimbusWhile Stratus is currently the one hogging headlines, it is not alone. The “Nimbus” NB.1.8.1 variant is still in the mix, though it is being outpaced by Stratus globally. For now, Stratus is the one to watch and not because it is the most dangerous, but because it is the fastest climber.Final ForecastThe XFG Stratus variant is not changing anything, but it is a reminder that the virus is still evolving and still finding ways to make itself known. Got a sudden sore throat that feels like sandpaper? Do not brush it off. Stratus may not be a storm you can see on a weather map, but it is definitely in the air.