this is written on your Plaquenil label.
"Azithromycin: (Major) Avoid coadministration of hydroxychloroquine and azithromycin. Hydroxychloroquine increases the QT interval and should not be administered with other drugs known to prolong the QT interval. Ventricular arrhythmias and torsade de pointes (TdP) have been reported with the use of hydroxychloroquine. There have been case reports of QT prolongation and TdP with the use of azithromycin in postmarketing reports."
it clearly says NOT to take Plaquenil with Azithromycin unless someone can monitor your QT interval (in a hospital, with 24/7 EKG monitor). Otherwise there is a good chance you die of heart attack, not Corona.
It is generally a good idea to read the labels of the drugs you take, especially the "interactions" section. many people die every year because they do not read labels and self medicate.