A notable increase in cases of the so-called ‘superflu’ has emerged, driven by a variant of the influenza virus known as the ‘K strain.’ According to NHS data, the average bed occupancy due to flu reached 1,717 last week, which includes 69 patients in critical care. This figure represents a staggering 56% increase compared to the same time last year and is ten times higher than the numbers recorded in 2023.
The ‘K strain’ refers specifically to the A(H3N2) subclade, a variant that has undergone minor genetic changes compared to previous strains. Experts characterize this as a ‘drifted’ flu variant. While the symptoms associated with this variant are similar to those of regular flu—including sudden high temperature, body aches, fatigue, and respiratory issues—health authorities stress that flu remains highly contagious.
Understanding the Impact of the K Strain
The A(H3N2) virus has been circulating among humans since 1968, but the current subclade K features genetic mutations. Although different, it is not deemed significantly more dangerous than prior flu strains. Flu viruses can survive on surfaces for up to 24 hours, highlighting the importance of preventive measures such as frequent handwashing and properly disposing of tissues after coughing or sneezing.
The NHS has issued guidance on managing flu symptoms, recommending rest, hydration, and the use of pain relievers like paracetamol or ibuprofen. Pharmacists can also provide advice on over-the-counter remedies. Vulnerable populations, including individuals over 65, pregnant women, and those with chronic medical conditions, are advised to contact NHS 111 or consult a general practitioner if symptoms persist beyond seven days.
Vaccination Urgency and Public Health Recommendations
In light of the rising flu cases, NHS trusts across the UK have urgently called on eligible individuals to receive their flu vaccine within the next two days. This proactive measure aims to mitigate the pressure on healthcare services during the Christmas period. The vaccine typically takes up to 14 days to become fully effective, making timely vaccination crucial to ensuring a healthier holiday season. High street chemists offer the flu vaccine at approximately £20.
In addition to vaccination, health officials encourage those who are experiencing flu symptoms to wear masks in public spaces. Daniel Elkeles, Chief Executive of NHS Providers, emphasized the importance of this practice, stating, “If you are coughing and sneezing but not unwell enough to stay home, you must wear a mask in public spaces, including on public transport, to prevent spreading the virus to others.”
The public’s adherence to these recommendations is vital for controlling the spread of the K strain flu and protecting the health of the community as the festive season approaches.
