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100 1 _aDe Vera- Ruiz, Elaine
245 _aDelta variant threat may affect herd immunity target - OCTA /
_cBy Elaine De Vera- Ruiz
653 _aDelta variant
653 _aOCTA
653 _aherd immunity
653 _aCOVID19
653 _aCOVID 19
653 _aCOVID-19
786 _aManila Bulletin
_bJune 28,2021
_c1,8
856 4 _uhttp://elibrary.doh.gov.ph/cgi-bin/koha/opac-retrieve-file.pl?id=53356e9d6c0946cc5e2ba8f2a0315475
942 _cNC
999 _c5016
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