Immunization update

Passive immunization is available against rabies, varicella, tetanus and hepatitis A and B. Active immunization is, in general, more efficacious with live attenuated viruses than with many of the bacterial vaccines. Toxoids, too, are very effective immunizing agents. Immunization usually starts at two months of age with DTP and oral poliovirus vaccine. For patients at high risk for secondary complications, influenza and pneumococcal immunizations are advisable. Hepatitis B vaccine is now available for persons at high risk because of their occupations.