A process in which a symbiont interferes with, inhibits or disrupt a JAK-STAT signal cascade in the host organism by reducing the activity of host JAK1 (Janus Kinase 1).
synonyms:
negative regulation by virus of tyrosine phosphorylation of host STAT protein,
inhibition of host JAK activity by virus,
negative regulation by virus of host JAK,
GO:0039515,
suppression by virus of tyrosine phosphorylation of host STAT protein,
viral inhibition of tyrosine phosphorylation of host STAT protein,
suppression by virus of host JAK-STAT cascade via inhibition of JAK1 activity,
suppression by virus of host JAK1 activity,
disruption by virus of host JAK-STAT cascade via inhibition of JAK1 activity
