washington u.s. senate negotiators wednesday try reach deal provide billion battle zika virus fear creep north unite state onset warm weather breed mosquitoes could carry disease senior senate democratic aid say detail still work vote could come next week whether approve new money february president barack obama request 1.9 billion emergency fund republicans balk argue 1.1 billion line need many republicans also want zika fund offset spend cut elsewhere among detail still work accord aid republican senator roy blunt missouri democratic senator patty murray washington two senior senators appropriations panel oversee healthcare spend try hammer deal aide murray say statement senator murray conversations chairman blunt others path forward emergency fund respond zika aide say murray still support obama 1.9 billion request amid congressional inaction obama administration shift 589 million help federal agencies prepare zika money come fund fight ebola virus replenish accord officials senator marco rubio however one republican push immediate emergency fund longer-term money make available start oct. battle disease cause severe brain deformities baby bear infect mother illnesses go ongoing issue beyond year rubio say add need jump now fear rubio home state florida could first place continental unite state get hit hard zika tropical climate first time see high-level conversations way forward senate positive development rubio say brief hallway interview reuters republicans house representatives still deeply divide new fund zika accord two senior aid u.s. senate negotiators zero zika virus fund