Influenza continues its unstoppable march. The Italian National Institute of Health's RespiVirNet surveillance system recorded over 816 cases of acute respiratory syndromes last week, nearly 100 more than the previous seven days. Over 40% of infections are caused by influenza viruses, and of these, more than half are traced to the new K strain of the A/H3N2 virus, now dominant in Italy.
The new virus presents an "evolutionary advantage that increases its transmissibility," explains the ISS, based on epidemiological data provided by the WHO. However, the institute specifies that "there has been no increase in the severity of clinical manifestations." Preliminary estimates also indicate that the vaccines currently in use continue to protect against hospitalizations, although available data do not yet allow a precise assessment of their effectiveness on the clinical manifestations of the disease.
Sardinia and Campania have experienced a sudden flu season explosion. In just seven days, the intensity has gone from low or medium to very high, the highest level on the scale. Sardinia has recorded 23,61 cases per thousand inhabitants, while Campania follows closely behind with 21,07 cases per thousand. Sicily also reports high intensity, with 17,61 cases per thousand inhabitants.
Children under 4 are the most affected age group. While the overall population has an incidence of 14,7 cases per thousand inhabitants, the rate has tripled among younger children, reaching 42 cases per thousand. This trend has been consistent for weeks and confirms the greater vulnerability of preschool-age children.
The ISS is trying to reassure the public: the new K strain, despite its increased transmissibility, shows no signs of increased danger. The protection afforded by vaccines against severe forms of the virus is a crucial defense for those most at risk.
Source EDITORIAL TEAM
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