Believe it or not, there is actually a St. Corona.
She was a second-century martyr from Northern Italy.
A prayer has been written to call upon her intercession during this pandemic:

Prayer to St. Corona in a Time of Epidemic

Lord Jesus Christ, You came into this world for our salvation. 
Look kindly on us now, we pray, that we, and all those who serve You, 
might be kept safe from this epidemic.
 
Heal those who are sick, comfort the suffering, 
bring back those who have gone astray, 
and above all, increase our faith, O Lord.
 
Give us the grace to follow You and, like the martyr St. Corona, 
who gave her life for love of You, 
to take up our crosses daily without fear or hesitation.
 
Lord Jesus Christ, Son of the living God, 
have mercy on us and on the whole world.
 
St. Corona, patroness of epidemic victims, pray for us.