QUARANTINE IN CONTROL OF INFECTIOUS DISEASES 63 



In whooping-cough a more definite routine is now being 

 developed, for the disease is beUeved to be transmitted 

 mainly in the early days. The whooping-cough bacilli 

 are scarcely found after the second week, so that isolation 

 may be relaxed two weeks after the onset of the spasmodic 

 cough. Nevertheless, when taken out, the child should 

 be kept strictly away from other children until the spas- 

 modic cough has entirely disappeared. 



In German measles isolation is usually fixed at one 

 week, in mumps (parotitis) until all swelling is gone, and 

 in chickenpox (varicella) until all the scabs are off. 



