The masters think a slave who chooses to work during his time off doesn't deserve the time off, and a slave who doesn't work to save enough throughout the year to buy whiskey for the holidays is considered lazy.
An adjuvant is a substance added to some vaccines to enhance the immune response of vaccinated individuals. The aluminum salts in some U.S. licensed vaccines are aluminum hydroxide, aluminum phosphate, alum (potassium aluminum sulfate), or mixed aluminum salts.
Some vaccines may also contain preservatives to keep the vaccine safe. Other vaccines may contain an aluminum salt, which helps the body to speed up the immune response. Nevertheless, vaccines are the only medically approved method to implement body with mechanisms of fighting viruses. Immunization schedule in Nigeria.