Triassi, M <br/><br/>
Persistence of immunity to poliomyelitis among a southern population that received four doses of OPV 5 to over 15 years before.  [electronic resource] 

 -  European journal of epidemiology  Feb 1996 
 - 5-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0393-2990 
<br/><br/><label>Standard No.: </label>10.1007/BF00144420  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Antibodies, Viral--isolation & purification<br/>Child<br/>Female<br/>Humans<br/>Immunity<br/>Italy--epidemiology<br/>Male<br/>Poliovirus--immunology<br/>Poliovirus Vaccine, Oral--immunology<br/>Seroepidemiologic Studies<br/>Time Factors