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 host JAK,
negative regulation by virus of tyrosine phosphorylation of host STAT protein,
inhibition of host JAK activity by virus,
disruption by virus of host JAK-STAT cascade via inhibition of JAK1 activity,
suppression by virus of tyrosine phosphorylation of host STAT protein,
GO:0039515,
suppression by virus of host JAK-STAT cascade via inhibition of JAK1 activity,
suppression by virus of host JAK1 activity,
viral inhibition of tyrosine phosphorylation of host STAT protein
