In Erie County, N.Y., everyone 16 years of age and older became eligible for a coronavirus vaccine this month. On the Canadian side, meanwhile, inoculations have been mostly limited to people 55 years and older, Indigenous adults, and other priority groups. And they’re getting only the first shot, for now. “It’s a point of frustration within Canada and within Niagara,” said Wayne Redekop, Fort Erie’s mayor. “Residents are looking to see who’s getting vaccinated and where. … It seems like if you’re in the United States and you want a vaccination, you can get it.”... Here in southern Ontario’s Niagara region, some 26 percent of residents have received at least one dose of a vaccine and 2 percent are fully vaccinated, according to government data. In neighboring Erie and Niagara counties on the U.S. side, roughly 44 percent of people have been given at least one dose; 30 percent have been fully vaccinated.