PMID- 24073203 OWN - NLM STAT- MEDLINE DCOM- 20140527 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 8 IP - 9 DP - 2013 TI - Molecular evolution of enterovirus 68 detected in the Philippines. PG - e74221 LID - 10.1371/journal.pone.0074221 [doi] LID - e74221 AB - BACKGROUND: Detection of Enterovirus 68 (EV68) has recently been increased. However, underlying evolutionary mechanism of this increasing trend is not fully understood. METHODS: Nasopharyngeal swabs were collected from 5,240 patients with acute respiratory infections in the Philippines from June 2009 to December 2011. EV68 was detected by polymerase chain reaction (PCR) targeting for 5' untranslated region (5'UTR), viral protein 1 (VP1), and VP4/VP2. Phylogenetic trees were generated using the obtained sequences. RESULTS: Of the 5,240 tested samples, 12 EV68 positive cases were detected between August and December in 2011 (detection rate, 0.23%). The detection rate was higher among inpatients than outpatients (p<0.0001). Among VP1 sequences detected from 7 patients in 2011, 5 in lineage 2 were diverged from those detected in the Philippines in 2008, however, 2 in lineage 3 were not diverged from strains detected in the Philippines in 2008 but closely associated with strains detected in the United States. Combined with our previous report, EV68 occurrences were observed twice in the Philippines within the last four years. CONCLUSIONS: EV68 detections might be occurring in cyclic patterns, and viruses might have been maintained in the community while some strains might have been newly introduced. FAU - Imamura, Tadatsugu AU - Imamura T AD - Tohoku University Graduate School of Medicine, Sendai, Japan. FAU - Suzuki, Akira AU - Suzuki A FAU - Lupisan, Socorro AU - Lupisan S FAU - Okamoto, Michiko AU - Okamoto M FAU - Aniceto, Rapunzel AU - Aniceto R FAU - Egos, Rutchie J AU - Egos RJ FAU - Daya, Edgardo E AU - Daya EE FAU - Tamaki, Raita AU - Tamaki R FAU - Saito, Mariko AU - Saito M FAU - Fuji, Naoko AU - Fuji N FAU - Roy, Chandra Nath AU - Roy CN FAU - Opinion, Jaime M AU - Opinion JM FAU - Santo, Arlene V AU - Santo AV FAU - Macalalad, Noel G AU - Macalalad NG FAU - Tandoc, Amado 3rd AU - Tandoc A 3rd FAU - Sombrero, Lydia AU - Sombrero L FAU - Olveda, Remigio AU - Olveda R FAU - Oshitani, Hitoshi AU - Oshitani H LA - eng SI - GENBANK/AF081348 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130920 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (5' Untranslated Regions) RN - 0 (Capsid Proteins) RN - 0 (DNA, Viral) SB - IM MH - 5' Untranslated Regions MH - Adolescent MH - Adult MH - Aged MH - Bayes Theorem MH - Capsid Proteins/*genetics MH - Child MH - Child, Preschool MH - DNA, Viral/*genetics/isolation & purification MH - Enterovirus/classification/*genetics/isolation & purification MH - Enterovirus Infections/*diagnosis/genetics/virology MH - *Evolution, Molecular MH - Female MH - Humans MH - Infant MH - Infant, Newborn MH - Male MH - Middle Aged MH - Molecular Sequence Data MH - Philippines MH - Phylogeny MH - Prospective Studies MH - Young Adult PMC - PMC3779236 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2013/09/28 06:00 MHDA- 2014/05/28 06:00 PMCR- 2013/09/20 CRDT- 2013/09/28 06:00 PHST- 2013/05/10 00:00 [received] PHST- 2013/07/28 00:00 [accepted] PHST- 2013/09/28 06:00 [entrez] PHST- 2013/09/28 06:00 [pubmed] PHST- 2014/05/28 06:00 [medline] PHST- 2013/09/20 00:00 [pmc-release] AID - PONE-D-13-19263 [pii] AID - 10.1371/journal.pone.0074221 [doi] PST - epublish SO - PLoS One. 2013 Sep 20;8(9):e74221. doi: 10.1371/journal.pone.0074221. eCollection 2013.