Translations:Basic Field Epi: Participants' Workbook/115/en
Herd immunity describes a form of immunity that occurs when a significant portion of a population of animals is immune and this provides protection for the susceptible animals}}
Herd immunity describes a form of immunity that occurs when a significant portion of a population of animals is immune and this provides protection for the susceptible animals}}
Halaman ini terakhir diubah pada 25 Agustus 2014, pukul 04.08.