US former top health official, who was subpoenaed to appear at a Senate hearing into Covid-19, says Markson’s reporting about virus’s origin ‘does not make any sense’

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Dr Anthony Fauci, the US’s chief medical adviser at the start of the pandemic, has described a book by News Corp investigative journalist Sharri Markson backing the “lab leak” theory of Covid-19’s origins as a “bunch of nonsense” in his newly released diaries.

This week, Fauci, 85, was subpoenaed by the Republican senator Rand Paul to appear at a Senate hearing into Covid-19 and his handling of the pandemic.

Letter, published before Anthony Fauci will appear before Congress, accuses Republicans of ‘waging a war on individual scientists’

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More than 155 scientists, physicians and public health advocates have called for an end to what they describe as the “vilification and harassment of many American scientists” by the Trump administration and its allies.

In an open letter published one day before Anthony Fauci, the former top US government science adviser, is scheduled to appear at a high-profile hearing in US Congress, after the Republican-controlled Senate homeland security and governmental affairs committee compelled him to testify, the scientists and physicians dismissed allegations against the ex-National Institute of Allergy and Infectious Diseases (Niaid) director as “baseless”.