Fill in the blank: Since none of the UF retired professors v…

Fill in the blank: Since none of the UF retired professors visited the travel nurse before they left for Mexico, none of the retirees received their Hepatitis A vaccines. If they had received the vaccine or had the disease prior to traveling, their immune system would have produced its own antibodies providing _____________ immunity against the disease. Unfortunately, on their trip they were exposed to Hep A. To prevent them from becoming ill they had to receive Hep A immunoglobulin from the Health Department thus providing them with _________________ immunity.