United Kingdom • • • 🌿 Progressive

Ilustración de un laboratorio de salud pública en invierno con microscopio, tubos de ensayo y placas de cultivo en tonos fríos frente a una ventana nevada
Ilustración de un laboratorio de vigilancia de virus invernales, con microscopio, tubos de ensayo y placas de cultivo. · Imagen generada para EPM

Flu stable as RSV rises in UK week 41 virus bulletin

The week 41 bulletin shows flu stable at baseline levels, COVID-19 at low levels with higher hospitalisations, respiratory syncytial virus increasing and…

--- The context --- As autumn advances, weekly surveillance shows whether health services face an ordinary season or added pressure. The bulletin for week 41, from 5 to 11 October 2026, brings together data on flu, COVID-19, respiratory syncytial virus and norovirus, along with basic prevention advice for the public. --- The facts --- Influenza activity remained stable and is circulating at baseline levels. Laboratory positivity stood at 6.0%, compared with 6.2% in the previous week, and flu hospitalisations remained stable at 1.88 per 100,000. Some indicators decreased among young adults. COVID-19 activity showed mixed trends and is circulating at low levels. Positivity was 8.8%, compared with 9% the previous week, while hospitalisations increased to 2.46 per 100,000, from 2.13 per 100,000. Intensive care admissions remained low and stable at 0.06 per 100,000. Respiratory syncytial virus activity increased and is circulating at baseline levels: positivity rose to 1%, from 0.4%, and hospital admissions reached 0.23 per 100,000, compared with 0.13 per 100,000. --- The positions --- The UK health security agency also placed norovirus within expected levels for this time of year, using data from weeks 40 and 41, from 28 September to 11 October. Norovirus laboratory reports were 18.6% lower than the 5-season average, rotavirus was 19.7% higher than that average but still within expected levels, and hospital outbreaks reported since the start of the 2025/2026 season were 25.4% lower than the average. Of the samples characterised, 87.2% were genogroup 2 (GII) and the most frequent genotype was GII.4, at 24.6%. The same authority noted that norovirus symptoms include nausea, vomiting and diarrhoea, and can also include a high temperature, abdominal pain and aching limbs, with a risk of dehydration especially in young children and older or immunocompromised people, so drinking plenty of fluids matters. It also advised washing hands with soap and warm water and cleaning surfaces with bleach-based products, and warned that alcohol gels do not kill norovirus. --- What remains unknown --- The bulletin offers a one-week snapshot, not a settled trajectory. The rise in COVID-19 hospitalisations and the increase in respiratory syncytial virus from baseline levels will need confirmation in the data that follow to show whether they mark a change of trend or a passing variation. --- Unanswered questions --- Will the rise in COVID-19 hospitalisations be confirmed next week or remain an isolated variation? Will respiratory syncytial virus positivity keep rising from its baseline level of 1%? Which groups will account for admissions if winter circulation intensifies in the coming weeks? --- EPM analysis --- The public protection reading is clear: baseline levels do not mean zero risk for those who can become dehydrated or end up admitted. Household prevention, handwashing with soap and warm water and care for young children, older people and the immunocompromised form the first barrier, together with not returning to work, school or nursery until 48 hours after symptoms have stopped. 📌 EPM Take: In EPM's view, the week 41 bulletin describes a season that is still contained but one that calls for protecting the most vulnerable first. Flu remains stable, COVID-19 leaves a mixed signal in hospitalisations and respiratory syncytial virus advances from very low levels. Against that picture, the sensible response is simple and steady prevention, services attentive to admissions and particular protection for young children, older people and the immunocompromised, without waiting for baseline levels to turn into pressure on care.
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