Recent data from the NHS indicates that while influenza infections across the United Kingdom are beginning to level off, hospitals remain on high alert due to sustained pressure on frontline services.
Despite the slight stabilisation in case numbers, health officials warn that the situation remains precarious, particularly as hospitalisation rates for the A(H3N2) Subclade K strain have reached approximately 10.3 per 100,000 people. This drifted strain has caused significant concern among medical professionals, especially regarding its impact on vulnerable groups.
Statistics show that South Asian communities are disproportionately affected, experiencing a 1.70 times higher incidence rate of flu-like illness compared to the White British population.
Dr Tahseen Khan, a prominent General Practitioner based in London, shared his professional insights on the current crisis with Asian Voice. Dr Khan has a long-standing history of serving diverse urban populations and has become a key voice in advocating for community health and vaccination confidence within the capital.
Clinical response to the drifted A(H3N2) strain
The current surge in A(H3N2) infections is driven by “antigenic drift,” where the virus picks up small genetic changes to spread more easily. Dr Khan explains that while this complicates the clinical response, it is a normal pattern seen over many decades. He reassures the public that this is not a “super flu”.
Crucially, the current vaccine remains effective as it trains the immune system to recognise key parts of the virus, allowing for a faster and stronger response that reduces the risk of hospitalisation.
South Asian ethnicity and clinical risk factors
Questions have been raised regarding whether South Asian ethnicity should be designated as an independent clinical risk factor, given that 60% of individuals in this group carry the LZTFL1 gene, which doubles the risk of respiratory failure.
Dr Khan notes that while the gene adds significant risk, it may not yet be specific enough to reclassify the entire community as a separate high-risk group. Instead, he emphasises the importance of preventative measures such as frequent hand washing, using face masks, and ensuring proper ventilation when meeting others.
Disparities in flu incidence and vaccine uptake
The higher incidence of flu in South Asian communities is driven by multiple factors, including a higher likelihood of working in public-facing jobs and living in multi-generational households.
Furthermore, South Asian adults often have higher rates of underlying conditions like diabetes and obesity, making them more vulnerable. A significant challenge remains the lower vaccine uptake in these groups.
Dr Khan stresses that building confidence and tackling misinformation is vital, as vaccination remains the safest way to protect vulnerable relatives from serious infection.
