DES MOINES — The good news: Iowa’s opioid problem is declining. The bad news: methamphetamine activity seems to be surging.Those were among the findings in the 2019 Iowa Drug Control Strategy issued Thursday by Dale Woolery, interim director of the Governor’s Office of Drug Control Policy. The report includes actions being taken to strengthen Iowa’s response to changing needs, he said.According to the drug control agency, there have been encouraging developments recently that point to a possible shift in the opioid epidemic — most notably a decrease of 9.7 percent in the number of controlled prescription drugs last year compared with 2016.Also, preliminary data indicate opioid-related overdose deaths in Iowa for the first eight months of this year are down 35 percent compared with the same period a year ago.