TY - GEN TI - Varicella surveillance in public elementary schools--Multnomah County, Oregon, 2002-2004 SN - 1545-861X PY - 2005///0325 KW - Chickenpox KW - epidemiology KW - Chickenpox Vaccine KW - Child KW - Humans KW - Oregon KW - Population Surveillance KW - Public Sector KW - Schools KW - Vaccination N1 - Publication Type: Journal Article ER -