artificial immunity的意思|示意

Artificial immunity refers to a type of immunity achieved by external means, such as through a vaccine or drug, rather than by natural means. Artificial immunity can be both active and passive.

Active artificial immunity is induced when a person is given an antigen through a vaccine, causing their body to produce antibodies, thus conferring immunity against the antigen. This type of immunity is long-lasting and is considered to be the most effective way to protect oneself from infection. Examples of active artificial immunity include the vaccination for measles, mumps and rubella.

Passive artificial immunity is when a person is given antibodies, either directly or through the transfer of serum from another person. This type of immunity is short-lived and is often used during an outbreak of a disease when a vaccine may not be available, or when a person cannot make their own antibodies. Examples of this type of immunity include the administration of antibodies to protect against tetanus and rabies.

Overall, artificial immunity is an effective way to protect oneself from infection and can be used in various ways depending on the situation. It is important to consult with a health care provider to discuss whether artificial immunity is appropriate for a particular situation.