TRUMP SAYS HE IS CONCERNED ABOUT THE RUSSIA PLAGUE CASE AND OFFERS US HELP. A LAB WORKER AT AN ANTI-PLAGUE INSTITUTE IN SIBERIA DIED AFTER SEVERE PNEUMONIA. NEARLY 200 CONTACTS ARE UNDER WATCH. RUSSIA CALLS IT PNEUMONIA OF UNKNOWN ORIGIN AND SAYS TESTS FOUND NO LINK TO HER WORK. LOCAL REPORTS CLAIM A BROKEN TEST TUBE. THAT PART IS NOT CONFIRMED. TRUMP: “WE’RE LOOKING AT IT VERY STRONGLY.” HE CALLED IT A ROUGH DISEASE AND SAID THE US WILL HELP. RUBIO SAYS WATCH CLOSELY, NOT PANIC. WHO SAYS PUBLIC RISK LOOKS LOW.