Halperin, Scott A <br/><br/>
Has the change to acellular pertussis vaccine improved or worsened pertussis control?  [electronic resource] 

 -  CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne  Nov 2006 
 - 1227 p.  digital 
<br/><br/> Publication Type: Comment; Journal Article 
<br/><br/><label>ISSN: </label>1488-2329 
<br/><br/><label>Standard No.: </label>10.1503/cmaj.060817  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Canada--epidemiology<br/>Child<br/>Child, Preschool<br/>Disease Outbreaks<br/>Female<br/>Humans<br/>Incidence<br/>Infant<br/>Infant, Newborn<br/>Male<br/>Pertussis Vaccine--immunology<br/>Population Surveillance<br/>Vaccines, Acellular<br/>Whooping Cough--epidemiology