TY - GEN AU - Ulloa-Gutierrez,Rolando AU - Vargas-Jiménez,Félix AU - Mora-Chavarría,Adriana AU - Umaña,Maria A AU - Calvo-Espinoza,Mónica AU - Alfaro-Bourrouet,Wilbert TI - Human metapneumovirus in Costa Rica SN - 0891-3668 PY - 2009///0707 KW - Child, Preschool KW - Costa Rica KW - epidemiology KW - Female KW - Fluorescent Antibody Technique, Direct KW - Humans KW - Infant KW - Infant, Newborn KW - Male KW - Metapneumovirus KW - Paramyxoviridae Infections KW - Sensitivity and Specificity N1 - Publication Type: Letter UR - https://doi.org/10.1097/INF.0b013e31819d0c64 ER -