IF vaccination inhibits, arrests, modifies, or mitigates variola because it is one with variola, if the attenuated virus and local eruption interfere with the more virulent and generalised ...

MR. DIXON'S letter supplies a further illustration of the curious fact that certain insect larvæ are able to feed upon poisonous plants with impunity, and can pass through their digestive system ...

Even nations, nationalities and cultures treat the word differently. In the English language, synonyms for safety are words like immunity, protection, security, care, custody, defense, ...