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This season’s flu outbreak has experts on high alert, believing it could be the most severe in a decade. The emergence of a mutated flu virus, which appears to evade some immunity and has led to an unusually early start to the flu season, has prompted concerns of a brutal winter ahead. The NHS has issued an urgent call for flu vaccinations as fears of a harsh season continue to grow.
Research on the evolution of influenza viruses reveals a pattern of constant mutation, with periodic significant shifts leading to new strains. In June of this year, a strain of H3N2 seasonal flu experienced seven mutations, resulting in a rapid increase in cases. This unexpected mutation outside of flu season has led to an early and intense start to the flu season in various countries.
The mutated virus is proving to be more infectious and spreading quickly, prompting fears of a strong flu season. The estimated R number of the new mutant flu is higher than usual, indicating a higher transmission rate. Experts predict that this flu season may surpass the severity of previous seasons, with potential implications for a larger portion of the population getting infected.
The severity of this year’s flu strain, particularly for older individuals, is a cause for concern. Researchers note that the group of H3N2 influenzas is historically more aggressive, posing a greater risk to the population. With flu-related deaths climbing each year, healthcare professionals are urging people to get vaccinated to protect themselves and others. Despite the vaccine not being a perfect match for the mutated virus, it still provides some level of protection and can help reduce the severity of the disease
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