Dolly Parton fans have joked that the singer has “cured coronavirus” after donating $1 million (£756,000) to scientists working on a promising-looking vaccine.This week, US company Moderna announced its coronavirus vaccine may be 94.5 per cent effective against Covid-19, and Parton is namechecked in the preliminary report.Published in the New England Journal of Medicine, the report states that the work was supported by the “Dolly Parton Covid-19 Research Fund (Vanderbilt University Medical Center)” amongst other groups.“Dolly Parton donated $1 million to Vanderbilt for vaccine research.