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 ......
Other Articles |


Am J Dis Child. 1913;V(5):379-385. doi:10.1001/archpedi.1913.04100290038004.
Text Size: A A A
Published online


The organism of whooping-cough has long been sought and many investigators have described it as an influenza-like bacterium. Notable among these workers was Spengler,1 who in 1897, called attention to the organism so often found in pertussis sputum. Bordet2 of Brussels has described at length his work with the bacillus of whooping-cough which hediscovered in 1905.

It appears that the organism grows by choice low in the lung and rarely above the larynx. During the early stage of the disease it is found abundantly, but becomes more scanty as the disease progresses. Its culture artificially is slow and difficult, unless the tube is inoculated without other organisms. On account of its slow growth it is easily overgrown by pneumococci and influenza bacilli. The best medium according to Bordet is defibrinated blood, human or rabbit, mixed with an equal quantity of 3 per cent. agar, containing a little extract


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.

0 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.