As he seeks to insert rival Joe Biden’s health into the presidential campaign, Trump has voiced escalating concern about how it would appear if he contracted coronavirus and has insisted on steps to protect himself, even as he refuses to wear a mask in public and agitates for large campaign rallies where the virus could spread.

When he travels to locations where the virus is surging, every venue the President enters is inspected for potential areas of contagion by advance security and medical teams, according to people familiar with the arrangements. Bathrooms designated for the President’s use are scrubbed and sanitized before he arrives. Staff maintain a close accounting of who will come into contact with the President to ensure they receive tests.

Measures to protect Trump from coronavirus scale up even as he seeks to move on