'Rather, it's infecting a population that are less inclined to become sick, because they've seen Sars-CoV-2 before, and they're better at regulating immune response against it.' 'The virus isn't necessarily less pathogenic,' says Greg Towers, professor of molecular virology at University College London, UK. While this might all suggest that the virus is evolving to become progressively less pathogenic, epidemiologists believe that the reality of the situation is more nuanced. 'Now I feel it's mutated to more similar symptoms to the flu, where it's very difficult clinically to distinguish between the two.' 'When Covid first came, it was characterised by these very odd, vague symptoms – from brain fog, feeling exhausted, and losing taste and smell,' says Ziad Tukmachi, a GP at Chartfield Surgery in south-west London, UK. Primary care physicians say they are finding it virtually impossible to distinguish Covid-19 symptoms from influenza without the help of a PCR test. The variant accounts for around 60% of new infections in early January, according to a data tracker from the US Centers for Disease Control and Prevention (CDC).Īt the same time, data from both the CDC and the UK Health Security Agency shows that hospitalisations and deaths from Covid-19 are markedly lower compared to January 2023.

Covid-19 cases are starting to rise again as a result of the JN.1 Covid variant, which appeared last September in France.

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