Scientists are not fully confident that COVID-19 vaccines will work on a new variant of the coronavirus found in South Africa, ITV’s political editor said on Monday, citing an unidentified scientific adviser to the British government. Reuters reports that British Health Secretary Matt Hancock said earlier on Monday that he was incredibly worried about the new variant. ‘According to one of the government’s scientific advisers, the reason for Matt Hancock’s ‘incredible worry’ about the South African Covid-19 variant is that they are not as confident the vaccines will be as effective against it as they are for the UK’s variant,’ ITV political editor Robert Peston said. Scientists say the new South African variant has also been associated with a higher viral load, meaning a higher concentration of virus particles in patients’ bodies, possibly contributing to higher levels of transmission.