We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Article |

Immunological Evaluation of Monovalent Influenza Vaccine in Adults and in Children

AMA Arch Intern Med. 1959;103(6):914-923. doi:10.1001/archinte.1959.00270060066009.
Text Size: A A A
Published online


The characteristic ability of influenza viruses to undergo variation in antigenic structure has given rise to a new family of influenza A strains, now officially referred to as the "Asian family." 1 With the first recognized appearance and isolation of this new virus, early in 1957, and the decision to develop vaccines for active immunization against this new antigenic variant,2 emphasis was placed anew on problems which required a review of our previous knowledge of the antigenic behavior of Type A influenza viruses as well as of the immunologic response in man when exposed to new variants of the Type A group of viruses.

Early studies on antigenic variants of influenza A viruses showed that protection induced by active immunization was greatest against the homologous virus strain and that the efficacy of immunization against heterologous strains depended upon antigenic relationships between the immunizing and the infecting virus strains.3


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

2 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.