A new Covid variant, dubbed ‘Stratus’, has been spreading more rapidly than previous strains and presents a unique set of symptoms. Identified initially in January this year, Stratus comprises two variants, XFG and XFG.3, both now under global monitoring by the World Health Organisation due to their growing prevalence.
The UK Health Security Agency noted a 7.1% increase in coronavirus cases across England by early September compared to the previous week, though it remains uncertain to what extent the XFG strain is responsible. Meanwhile, health authorities in Ireland have reported 425 new Covid infections within the same period, with the XFG variant believed to be behind most cases.
What sets the Stratus variant apart is an unusual early symptom—a hoarse or raspy voice—which can serve as a precursor to more conventional Covid symptoms such as fever, cough, and runny nose. Due to its distinct initial warning sign, individuals might overlook it as a potential Covid indicator.
Dr. Nye highlighted that while Stratus shares many similarities with past strains, individuals tend to experience very sore throats and a hoarse voice more prominently. He emphasized the importance of maintaining up-to-date vaccinations, as this variant can potentially evade the immune system even among those previously infected. This characteristic reduces the effectiveness of earlier vaccines, reinforcing the need for regular vaccinations.
Dr. Peter Chin-Hong, an infectious disease expert from the University of California, San Francisco, noted Stratus’s broader range of symptoms. He remarked on the higher incidence of sore throats, particularly among unvaccinated elderly individuals. As schools resume and children are in close contact with one another, the risk of Covid transmission increases, making even simple symptoms like a sniffle potential indicators of the virus.
The Stratus variant’s rapid transmission and unique symptom profile underscore the need for increased awareness and vigilance, particularly as communities navigate the challenges of the ongoing pandemic.