Hydroxychloroquine blocks SARS-CoV-2 entry into the endocytic pathway in mammalian cell culture - Communications Biology
Super-resolution microscopy in cultured cells is employed to dissect the effect of hydroxychloroquine (HCQ) at the plasma membrane and HCQ directly perturbs clustering of the SARS-CoV-2 receptor ACE2 with endocytic lipids and PIP2 clusters.
Remember also that the NIH published a paper in 2005 that showed anti-parasitics worked against SARS/Covid diseases.