“…Possible triggers for PR or PR-like rash include insect bites, viral infections (including SARS-CoV-2) [10] and many different drugs [9]. Interestingly, vaccinations have been reported to be an important triggering factor, and a PR-like rash has been reported after influenza, hepatitis B, smallpox, Bacillus Calmette-Guerin, diphtheria, and pneumococcus vaccines [11][12][13]. It was postulated that immune stimulation caused by the vaccine led to HHV reactivation, resulting in PR [4,13,14].…”