West Nile virus activity--United States, October 23-29, 2003.  [electronic resource] 

 -  MMWR. Morbidity and mortality weekly report  Oct 2003 
 - 1053-4 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1545-861X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Birds--virology<br/>Culicidae--virology<br/>Dogs--virology<br/>Horses--virology<br/>Humans<br/>Population Surveillance<br/>Sciuridae--virology<br/>United States--epidemiology<br/>West Nile Fever--epidemiology<br/>West Nile virus--isolation & purification