Any process that activates or increases the frequency, rate or extent of host NF-kappaB-mediated signal transduction pathways during the host defense response. The host is defined as the larger of the organisms involved in a symbiotic interaction.
Synonyms:
exact_synonym:
activation by symbiont of host I-kappaB kinase/NF-kappaB cascade; positive regulation by symbiont of host I-kappaB kinase/NF-kappaB cascade; positive regulation by symbiont of host NF-kappaB-mediated signal transduction pathway; positive regulation by symbiont of nuclear factor kappa-light-chain-enhancer of activated B cells mediated signal transduction pathway; stimulation by symbiont of host I-kappaB kinase/NF-kappaB cascade; up regulation by symbiont of host I-kappaB kinase/NF-kappaB cascade; upregulation by symbiont of host I-kappaB kinase/NF-kappaB cascade