(3) Passive Immunization.
This technique is a transient immunity produced when blood serum or
globulin of immune individuals or animals are given to the patient. The
injection of serum containing antibodies leads to a maximal circulating
concentration of the antibodies.
Various procedures for passive
immunization may include:
Injection of serum from convalescent patients.
Injection of serum from
against the disease.
Some examples of chemotherapeutic agents are antibiotics, such as
Penicillin, Streptomycin and Tetracycline; Sulfonamides, such as
Sulfadiazine, Sulfamerazine, and Sulfathiazole; Arsenicals, such as
Neoarsphenamine, Tryparsamide, and Mapharsen; and others such as Quinine,
Atabrine, and Plasmachin. The primary example is the administration of
chemotherapeutic agents after the appearance of clinical symptoms.
drawback is the fact that antimicrobial drugs are not effective in the
treatment of all diseases, especially viral diseases. Chemotherapeutic
agents retard the multiplication of invading pathogens. Chemotherapeutic
agents may be classed as Bactericidal, such as Penicillin and
Streptomycin, or Bacteriostatic, such as Sulfonamides and Tetracycline.
Many compounds are used to kill microorganisms or to inhibit their
growth. Disinfectants are materials that kill pathogenic microorganisms.
Antiseptics are substances that inhibit the growth and development of
microorganisms, but do not necessarily kill them.