Shingles Contagiousness and Surgical Considerations

Contagiousness Timeline

The period of contagiousness for herpes zoster begins 1-2 days before the onset of rash and continues until all lesions have dried and crusted, according to the Centers for Disease Control and Prevention guidelines 1, 2
In immunocompetent individuals, lesions typically crust within 4-7 days after rash onset, as stated by the Infectious Diseases Society of America 1, 2
Immunocompromised patients experience slower healing of lesions, taking 7-14 days or longer, and may have prolonged viral shedding, as reported by the Clinical Infectious Diseases journal 2, 1

Elective surgery should be postponed until the patient is no longer contagious, when all lesions have dried and crusted, as recommended by the American College of Surgeons 2, 1
Patients with localized herpes zoster who are immunocompetent should have all lesions completely covered if any interaction with others is necessary before lesions have crusted, according to the Centers for Disease Control and Prevention guidelines 1
For patients with disseminated zoster or localized zoster who are immunocompromised, stricter isolation is required until all lesions have dried and crusted, as stated by the Infectious Diseases Society of America 1, 2

For uncomplicated herpes zoster, oral antiviral therapy should be initiated as soon as possible and continued until all lesions have scabbed, as recommended by the American Academy of Dermatology 2, 3
For immunocompromised patients with disseminated or invasive disease, intravenous acyclovir is recommended, according to the Clinical Infectious Diseases journal 2, 3

The surgical site should be free of active lesions to minimize risk of bacterial superinfection, as stated by the American College of Surgeons 2
Immunocompromised patients may require higher doses or longer courses of antiviral therapy before being considered for surgery, according to the Infectious Diseases Society of America 1, 3

Assuming that starting antiviral therapy immediately makes the patient non-contagious, when viral shedding continues until lesions are fully crusted, as reported by the Clinical Infectious Diseases journal 1
Failing to recognize that immunocompromised patients may have prolonged periods of viral shedding and contagiousness, as stated by the Centers for Disease Control and Prevention guidelines 1, 2