Concordance
<B>1.</B> The presence of any given condition such as HIV in both members of a couple.<BR><B>2.</B> In genetics, the presence of a phenotype such as asthma in both members of a twin pair.<BR><B>3.</B> In clinical care, agreement between physician and patient.<BR>In all sense, concordance is as opposed to discordance.
From the Latin concordare, to agree