You should follow the same instructions on "How should I care for the vaccination site?" and read the following:
Even patients vaccinated in the past may be at increased risk due to current immunodeficiency. If contact with unvaccinated patients is essential and unavoidable, healthcare workers can continue to have contact with patients, including those with immune deficiencies, as long as the vaccination site is well-covered and thorough hand-hygiene is maintained. In this setting, a more occlusive dressing might be appropriate. Semi-permeable polyurethane dressings (e.g., Opsite®, Tegaderm®) are effective barriers to vaccinia and recombinant vaccinia viruses.
However, exudate may accumulate beneath the dressing, and care must be taken to prevent viral contamination when the dressing is removed. In addition, accumulation of fluid beneath the dressing may increase the maceration of the vaccination site. To prevent accumulation of exudates, cover the vaccination site with dry gauze, and then apply the dressing over the gauze. The dressing should also be changed daily or every few days (according to type of bandaging and amount of exudate), such as at the start or end of a duty shift.
Three Key Points:
Vaccinia virus is present at the vaccination site for 30 days and until the vaccination site is completely healed. This means other people can get infected if they come in contact with virus from your arm.
Most vaccination sites can be left unbandaged, when not in close contact with other persons. Airing the site will speed healing. Wear sleeves covering the site and/or use an absorbent bandage to make a touch-resistant barrier when around others. Dispose of bandages in sealed or double plastic bags. You may carefully add a little bleach, if desired.
Keep the site dry. Do not use creams or ointments; they will delay healing. Long-sleeve clothing worn during the day and at night can protect the site from dirt. Launder clothing and linens that touch the site in hot water with soap or bleach.
Normal bathing can continue. Dry off carefully, so the towel does not rub or spread virus elsewhere. Don't allow others to use that towel until laundered. Don't use public towels, unless laundry workers are aware of special handling precautions. Use a waterproof adhesive bandage if you exercise enough to cause a sweat. Avoid swimming pools and spas until the site is completely healed.
Take good care of your vaccination site.