JAIPUR: All three old cases of coronavirus-positive patients in the state have now been tested negative and cured, while a 24-year-old youth found having the affliction is undergoing treatment at SMS Hospital here, a senior official said on Sunday.The three who have been declared corona-negative following repeat tests include an Italian couple and a Dubai-returned, 85-year-old Jaipur native.“Sixty-nine-year-old Italian man and an 85-year-old Jaipur native have been tested negative now twice. Both are now coronavirus-free,” said Additional Chief Secretary (Medical & Health ) Rohit Kumar Singh.Italian's man wife was tested negative for coronavirus affliction earlier.Singh said a total of three corona patients, including corona-positive, 70-year-old wife of the Italian man, have turned coronavirus-free after treatment at the state-run Sawai Man Singh Hospital, Jaipur.The three, however, have not yet been discharged and continue to be admitted in hospitals, he said.The Italian woman has been shifted to Rajasthan University of Medical Sciences (RUHS) Hospital from SMS hospital while the remaining two are in the SMS hospital.A total of four persons have been tested positive for coronavirus here in the state so far and three of them have become free from the virus.The fourth patient, a 24-year-old man, who was tested positive on Saturday, is also admitted at the SMS hospital.